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Journal articles on the topic 'Keywords: Schiff bases (SBs)'

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Published: 7 June 2025

Last updated: 2 August 2025

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1

Karle, Shubham N., and Megha T. Salve. "In Silico Docking and Admet Prediction of a Novel Antibacterial Derivatives (Schiff Base) Targeting Dihydropteroate Synthase (1aj2)." Journal of Pharmaceutical Research 23, no. 2 (2024): 71–76. http://dx.doi.org/10.18579/jopcr/v23.2.37.

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Schiff base-containing (imine or azomethine–C=N–) derivatives have been investigated in relation to a broad range of activity, including antibacterial activity, antiviral activity, anticancer activity, polymer technology and in many other areas due to the presence of moiety in their structures. Antibacterial activity of Schiff bases can achieve by various enzyme inhibitory mechanism. Primary target for the antibacterial drugs is inhibiting dihydropteroate synthase (DHPS) enzyme which result in inhibition of bacterial folate synthesis and act as bactericidal. In this research article Molinspira

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2

Varma, Madhuri, Suhas Janwadkar, Himani More, and Mrunmayi Churi. "A review on applications of Schiff bases and their comparison in different field." International Journal of Advance and Applied Research 6, no. 25(A) (2025): 31–34. https://doi.org/10.5281/zenodo.15296298.

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<strong>Abstract: </strong> Schiff bases are adaptable organic compounds that are commonly synthesized through the condensation of various amino compounds with aldehydes or ketones, forming imines. These Schiff base ligands are regarded as privileged ligands due to their straightforward synthesis via condensation. They exhibit a wide range of applications in fields such as medicine, pharmaceuticals, coordination chemistry, biological activities, industries, food packaging, dyes, and polymers, and are also utilized as oxygen detectors. Transition metal complexes, such as those containing copper

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3

TRIPATHEE, NEHA. "Schiff Bases in Environmental Science: Approaches to Pollution Management." WORLD JOURNAL OF APPLIED SCIENCE AND RESEARCH 12-13, no. 01-02 (2023): 67. https://doi.org/10.59467/wjasr.2022-23.12-13.67.

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Schiff bases (SBs), characterized by the imine (-C=N-) group, have gained prominence for their versatility and environmental significance. Their synthesis aligns with green chemistry principles, employing eco-friendly solvents, catalysts, and techniques such as solvent-free reactions, ball milling, and biocatalysis. SBs demonstrate remarkable utility in pollution control applications, including wastewater treatment, heavy metal removal, dye degradation, and pesticide adsorption. They act as efficient chelating agents, photocatalysts, and corrosion inhibitors, offering sustainable solutions to

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4

Somanatha, T. M., G. Krishnaswamy, R. Nayana, et al. "New 1, 2, 3-triazole-Furan Scaffold Schiff bases: Design, Synthesis, Characterization and biological studies." Research Journal of Chemistry and Environment 27, no. 9 (2023): 1–7. http://dx.doi.org/10.25303/2709rjce0107.

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In the present investigation, Schiff bases (SBs) bearing 1, 2, 3-triazole and furan motif were synthesized through condensation reaction via conventional approach (Route-A) and solvent free approach (Route-B). It has been found that route-B is efficient since it is eco friendly with short reaction time and satisfactory yield than route-A. The structure and formation of targeted Schiff bases (SBs) were confirmed by different spectroscopic techniques (1H NMR, 13C NMR and Mass). Finally, in vitro antimicrobial screening result revealed that the synthesised SBs derivatives may act as moderate anti

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5

Iacopetta, Domenico, Jessica Ceramella, Alessia Catalano, et al. "Metal Complexes with Schiff Bases as Antimicrobials and Catalysts." Inorganics 11, no. 8 (2023): 320. http://dx.doi.org/10.3390/inorganics11080320.

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Complexes of Schiff bases (SBs) with metals are promising compounds exhibiting a broad range of applications, such as catalysts, polymers, dyes, and several biological activities, including antimicrobial, anticancer, antioxidant, antimalarial, analgesic, antiviral, antipyretic, and antidiabetic actions. Considering the crisis that the whole world is now facing against antimicrobial-resistant bacteria, in the present review, we chose to focus on the activity of SBs as antimicrobials, particularly underlying the most recent studies in this field. Finally, some interesting catalytic applications

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6

Ceramella, Jessica, Domenico Iacopetta, Alessia Catalano, Francesca Cirillo, Rosamaria Lappano, and Maria Stefania Sinicropi. "A Review on the Antimicrobial Activity of Schiff Bases: Data Collection and Recent Studies." Antibiotics 11, no. 2 (2022): 191. http://dx.doi.org/10.3390/antibiotics11020191.

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Schiff bases (SBs) have extensive applications in different fields such as analytical, inorganic and organic chemistry. They are used as dyes, catalysts, polymer stabilizers, luminescence chemosensors, catalyzers in the fixation of CO2 biolubricant additives and have been suggested for solar energy applications as well. Further, a wide range of pharmacological and biological applications, such as antimalarial, antiproliferative, analgesic, anti-inflammatory, antiviral, antipyretic, antibacterial and antifungal uses, emphasize the need for SB synthesis. Several SBs conjugated with chitosan have

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Sinicropi, Maria Stefania, Jessica Ceramella, Domenico Iacopetta, et al. "Metal Complexes with Schiff Bases: Data Collection and Recent Studies on Biological Activities." International Journal of Molecular Sciences 23, no. 23 (2022): 14840. http://dx.doi.org/10.3390/ijms232314840.

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Metal complexes play a crucial role in pharmaceutical sciences owing to their wide and significant activities. Schiff bases (SBs) are multifaceted pharmacophores capable of forming chelating complexes with various metals in different oxidation states. Complexes with SBs are extensively studied for their numerous advantages, including low cost and simple synthetic strategies. They have been reported to possess a variety of biological activities, including antimicrobial, anticancer, antioxidant, antimalarial, analgesic, antiviral, antipyretic, and antidiabetic ones. This review summarizes the mo

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8

Aragón-Muriel, Alberto, Viviana Reyes-Márquez, Farrah Cañavera-Buelvas, et al. "Pincer Complexes Derived from Tridentate Schiff Bases for Their Use as Antimicrobial Metallopharmaceuticals." Inorganics 10, no. 9 (2022): 134. http://dx.doi.org/10.3390/inorganics10090134.

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Within the current challenges in medicinal chemistry, the development of new and better therapeutic agents effective against infectious diseases produced by bacteria, fungi, viruses, and parasites stands out. With chemotherapy as one of the main strategies against these diseases focusing on the administration of organic and inorganic drugs, the latter is generally based on the synergistic effect produced by the formation of metal complexes with biologically active organic compounds. In this sense, Schiff bases (SBs) represent and ideal ligand scaffold since they have demonstrated a broad spect

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9

Nicastro, Gloria, Louise Mary Black, Paolo Ravarino, et al. "Controlled Hydrolysis of Odorants Schiff Bases in Low-Molecular-Weight Gels." International Journal of Molecular Sciences 23, no. 6 (2022): 3105. http://dx.doi.org/10.3390/ijms23063105.

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Imines or Schiff bases (SB) are formed by the condensation of an aldehyde or a ketone with a primary amine, with the removal of a water molecule. Schiff bases are central molecules in several biological processes for their ability to form and cleave by small variation of the medium. We report here the controlled hydrolysis of four SBs that may be applied in the fragrance industry, as they are profragrances all containing odorant molecules: methyl anthranilate as primary amine, and four aldehydes (cyclamal, helional, hydroxycitronellal and triplal) that are very volatile odorants. The SB stabil

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10

Mohammed, Haneen J., and M. S. Magtoof. "Microwave assisted Synthesis of Some New 1,3-Oxazepines from Schiff Bases." INDIAN JOURNAL OF HETEROCYCLIC CHEMISTRY 34, no. 01 (2024): 77. http://dx.doi.org/10.59467/ijhc.2024.34.77.

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The synthesis of four new 1,3-oxazepines was accomplished by the reaction between maleic anhydride with Schiff bases. The Schiff-bases (a1-a2) were prepared from the reaction of aromatic aldehyde with aromatic amines. The newly synthesized compounds were characterized by spectral (FlT-IR, 1H NMR, 13C NMR) and elemental analytical data.. KEYWORDS :1,3- Oxazepine, DMF, Maleic anhydride, Schiff-bases.

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11

Singh, Anil K., Camille Sandorfy, and Janos H. Fendler. "Dodecylammonium-glutamate Schiff bases of retinal." Canadian Journal of Chemistry 68, no. 7 (1990): 1258–62. http://dx.doi.org/10.1139/v90-194.

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Dodecylammonium glutamate (4) has been prepared from dodecylamine (2) and l-glutamic acid (3) in ethanol and in aqueous ethanol. The obtained crystalline glutamic acid salt of dodecylamine (4) has been characterized by absorption, FTIR, 1H NMR, 13C NMR, and mass spectroscopy. Reaction of all-trans retinal (5) with the α-amino group of 4 gave a Schiff base (6), which was protonated by the α-COOH group of the glutamyl residue. However, the protonated Schiff base underwent acid-catalyzed hydrolysis to 2 + 3 + 5. Some of 5 reacted with 2 to give the corresponding Schiff base. The proposed structur

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12

Laddha, Purushottam R., and Kailash R. Biyani. "Synthesis and Biological Evaluation of Novel Schiff Bases of Aryloxy Moiety." Journal of Drug Delivery and Therapeutics 9, no. 5-s (2019): 44–49. http://dx.doi.org/10.22270/jddt.v9i5-s.3635.

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Schiff's bases are condensation products of primary amines with carbonyl compounds. Schiff bases (imines) possess wide variety of biological activities that include antibacterial and antifungal activity. In present work, Schiff bases from 3,5- Dimethoxyphenol (aryloxy moiety) as starting material synthesized. Esterification of 3,5- Dimethoxyphenol led to formation of (3,5-Dimethoxy-phenoxy)-acetic acid ethyl ester (1). (3,5-Dimethoxy-phenoxy)-acetic acid hydrazide (2) is derived from Compound (1) by hydrazination. Compound (2) was reacted with different aromatic aldehydes to yield novel imines

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13

Chiacchio, Maria Assunta, Agata Campisi, Daniela Iannazzo, Salvatore V. Giofrè, and Laura Legnani. "Design of New Schiff Bases and Their Heavy Metal Ion Complexes for Environmental Applications: A Molecular Dynamics and Density Function Theory Study." International Journal of Molecular Sciences 25, no. 8 (2024): 4159. http://dx.doi.org/10.3390/ijms25084159.

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Schiff bases (SBs) are important ligands in coordination chemistry due to their unique structural properties. Their ability to form complexes with metal ions has been exploited for the environmental detection of emerging water contaminants. In this work, we evaluated the complexation ability of three newly proposed SBs, 1–3, by complete conformational analysis, using a combination of Molecular Dynamics and Density Functional Theory studies, to understand their ability to coordinate toxic heavy metal (HMs) ions. From this study, it emerges that all the ligands present geometries that make them

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14

Sona, B. Warrier and Prashant S. Kharkar*. "DESIGN, SYNTHESIS AND CHARACTERIZATION OF FLUORESCENT PROBES BASED ON SCHIFF BASES." Indo American Journal of Pharmaceutical Sciences 04, no. 06 (2017): 1505–10. https://doi.org/10.5281/zenodo.815365.

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Abstract: Schiff bases of fluorescein were synthesized from fluorescein hydrazide using different aromatic aldehydes. These compounds show bright fluorescence different from that of starting material, fluorescein. The compounds were characterised by spectroscopic methods. Absorption and fluorescence spectra of the compounds were also recorded. Keywords: Fluorescein, Schiff bases, Fluorescein hydrazide, fluorescent probes, fluorescence

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15

SEKAR, PRAVEEN, SHRIDHARSHINI KUMAR, and Senthil Kumar Raju. "A Review on Chemistry, Synthesis and Biological Applications of Chalcone-based Schiff Bases." Journal of Drug Delivery and Therapeutics 13, no. 3 (2023): 145–54. http://dx.doi.org/10.22270/jddt.v13i3.5969.

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Heterocyclic compounds are an important class of compounds in the field of pharmaceutical and synthetic organic chemistry. The Schiff bases contain azomethine linkages which are obtained by the condensation of aldehyde/ketone with amines. Among the various types of Schiff bases, the chalcone-based Schiff bases play a vital role in the treatment of various ailments and various applications, which can be synthesized by using different types of chalcones as the starting materials. These types of compounds were synthesized by using various techniques like conventional means of synthesis, microwave

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16

Z. Naji, Hussam, and Eman M. Hussain. "Synthesis, Characterization and Evaluation of the Biological Activity of Some New Thiazolidine Derivatives Derived from Schiff bases." Sumer 3 8, CSS 3 (2023): 1–11. http://dx.doi.org/10.21931/rb/css/2023.08.03.20.

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In this research, new compounds were synthesized via the reaction of dichloroacetic acid with two moles of piperidine. The novel acid 1 was converted to its ester 2. Acid hydrizide 3 was prepared by the reaction of hydrazine hydrate with new ester 2, which was later used to prepare derivatives of Schiff bases 4-13. In the last step, Schiff bases and thioglycolic acid were reacted to give thiazolidine derivatives 14-23. All these compounds were diagnosed using melting points, FTIR, 1HNMR and mass spectroscopy. Scheme 1 shows all the synthesized compounds' reaction steps and structures. Keywords

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17

Prashanthi, Y., and Shiva Raj. "Synthesis and Characterization of Transition Metal Complexes with." Journal of Scientific Research 2, no. 1 (2009): 114–26. http://dx.doi.org/10.3329/jsr.v2i1.2732.

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The Schiff bases namely MIMFMA, MIMTMA and MIPMA have been prepared by reacting 3-amino-5-methyl isoxazole with 5-methyl furan-2-carboxyaldehyde, 5-methyl thiphene-2-carboxaldehyde and pyridine-2-carboxaldehyde. The Cu(II), Ni(II), Co(II), Zn(II) and VO(IV) have been prepared by reacting metal chlorides with those Schiff bases in an alchololic medium. The complexes are electrolytes in DMSO. These have been characterized by using elemental analysis, IR, UV-VIS, 1H, 13C, mass spectra, magnetic susceptibility, conductance measurements and thermo gravimetric studies. The complexes were found to ha

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18

Mohammad, Zainab Hashim, Diana AbdAlkreem Al-Rifaie, and Malath Khalaf Rasheed. "Synthesis, characterization, antioxidant, and antibacterial activities of Schiff bases and thiazinan 4-ones derived from minoxidil." INDIAN JOURNAL OF HETEROCYCLIC CHEMISTRY 35, no. 02 (2025): 531. https://doi.org/10.59467/ijhc.2025.35.531.

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The study reports the synthesis and biological activities of some new Schiff bases and thiazinan-4-ones staring from minoxidil. Schiff bases (M1-M7) were prepared by the reaction of minoxidil with various aromatic aldehydes. The thiazinan-4-ones were obtained through the cyclization of Schiff bases (M5, M6) with cysteine (MS5, MS6). All the compounds were characterized by spectral data (FT-IR, 1H NMR, and mass including fragmentation pathways). The synthesized compounds (M1, M2, M3, M5, M6, MS5 and MS6) were evaluated for their anti-oxidant properties utilizing the reducing power and total ant

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19

Hossain, M. M., M. A. Foysal, M. Mahabub, and Al Amin. "Microwave-assisted Efficient Synthesis of Isatins and spiro-Thiadiazolines under Green Chemistry Protocol." Journal of Scientific Research 2, no. 2 (2010): 322–29. http://dx.doi.org/10.3329/jsr.v2i2.3731.

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MW-assisted treatment of oximinoacetanilides obtained from substituted primary aromatic amines was carried out in conc. H2SO4 medium for 5-10 sec to give cyclic amides (isatins) through intramolecular cyclization by means of electrophilic aromatic substitution. Isatins reacted with thiosemicarbazide under MW-condition gave the corresponding Schiff-bases. The Schiff-bases undergo cyclization in presence of minimal Ac2O under MW-irradiation for 3-4 min to give the spiro-thiadiazoline acetyl derivatives in excellent yield. Keywords: Microwave-synthesis; Isatins; Schiff-base; spiro-Thiadiazoline;

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20

TRIPATHEE, NEHA. "Exploring the Versatility: Applications of Schiff Base Complexes in Catalysis, Medicine, and Material Science." WORLD JOURNAL OF APPLIED SCIENCE AND RESEARCH 10-11, no. 01-02 (2021): 33. https://doi.org/10.59467/wjasr.2021.10-11.33.

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Schiff bases, characterized by the imine (?RC=N?) functional group, are condensation products of carbonyl compounds and primary amines, with wide-ranging applications in medicinal chemistry, catalysis, and material science. Their complexes exhibit diverse biological activities such as antimicrobial, anticancer, antioxidant, anti-inflammatory, and antiplasmodium properties. These bioactivities are enhanced by the metal ion coordination within the Schiff base framework, showing potential for drug development against resistant pathogens and cancers. Catalytically, Schiff base complexes, particula

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TRIPATHEE, NEHA. "Exploring the Versatility: Applications of Schiff Base Complexes in Catalysis, Medicine, and Material Science." WORLD JOURNAL OF APPLIED SCIENCE AND RESEARCH 10-11, no. 01-02 (2021): 33. https://doi.org/10.59467/wjasr.2020-21.10-11.33.

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Schiff bases, characterized by the imine (?RC=N?) functional group, are condensation products of carbonyl compounds and primary amines, with wide-ranging applications in medicinal chemistry, catalysis, and material science. Their complexes exhibit diverse biological activities such as antimicrobial, anticancer, antioxidant, anti-inflammatory, and antiplasmodium properties. These bioactivities are enhanced by the metal ion coordination within the Schiff base framework, showing potential for drug development against resistant pathogens and cancers. Catalytically, Schiff base complexes, particula

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22

Almehmadi, Mazen, Osama Abdulaziz, Abdulelah Aljuaid, Abdullah Yahya Abdullah Alzahrani, Kamal Kant Joshi, and Mohammad Asif. "Microwave-assisted synthesis and in vitro antimicrobial activity of some N-(3-chloro-2-oxo-4-arylazetidin-1-yl)-4-nitrobenzamide derivatives." INDIAN JOURNAL OF HETEROCYCLIC CHEMISTRY 35, no. 02 (2025): 363. https://doi.org/10.59467/ijhc.2025.35.363.

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4-Nitrobenzohydrazide was condensed with aryl aldehydes (2a-e) in DMSO in MW to give respective N'-arylidene-4-nitrobenzohydrazide/Schiff's bases (3a-e). The formation of Schiff bases was followed by cyclization with chloroacetyl chloride and triethylamine in DMF to yield N-(3-chloro-2-oxo-4-phenylazetidin-1-yl)-4-nitrobenzamide derivatives (4a-e). The structures of synthesized compounds were confirmed by IR, 1HNMR, and mass spectral analysis. These compounds were evaluated for their in vitro antimicrobial activity. All the compounds showed less antimicrobial activity against the tested bacter

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23

Isyaku, S., H. N. Aliyu, E. C. Ozoro, and T. Abubakar. "Synthesis, characterization and antimicrobial studies of Mn(II) complexes of acetylthiophene and acetyl Furan Schiff base derivatives." Bayero Journal of Pure and Applied Sciences 12, no. 1 (2020): 85–92. http://dx.doi.org/10.4314/bajopas.v12i1.15s.

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Manganese (II) complexes of Schiff bases; 2-acetylthiophene 4‑phenylthiosemi-carbazone (AT-PTSC) and 2-furylmethylketone-4-phenylthiosemi-carbazone (AF‑PTSC) derived from condensation of 2-acetylthiophene and 2-furylmethylketone (2-acetylfuran) each with 4-phenylthiosemicarbazide in (1:1 molar ratio) ethanol, have been synthesized. The Schiff bases and the Mn(II) complexes were characterized on the basis of melting point/decomposition temperature, solubility, magnetic susceptibility, infrared spectra, molar conductance measurements, elemental and gravimetric analyses. The Mn(II) complexes show

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Isyaku, S., H. N. Aliyu, E. C. Ozoro, and T. Abubakar. "Synthesis, characterization and antimicrobial studies of Mn(II) complexes of acetylthiophene and acetyl furan Schiff base derivatives." Bayero Journal of Pure and Applied Sciences 12, no. 1 (2020): 251–58. http://dx.doi.org/10.4314/bajopas.v12i1.39s.

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Manganese(II) complexes of Schiff bases; 2-acetylthiophene-4‑phenylthiosemi-carbazone (AT-PTSC) and 2-furylmethylketone-4-phenylthiosemi-carbazone (AF‑PTSC) derived from condensation of 2-acetylthiophene and 2-furylmethylketone (2-acetylfuran) each with 4-phenylthiosemicarbazide in (1:1 molar ratio) ethanol, have been synthesized. The Schiff bases and the Mn(II) complexes were characterized on the basis of melting point/decomposition temperature, solubility, magnetic susceptibility, infrared spectra, molar conductance measurements, elemental and gravimetric analyses. The Mn(II) complexes show

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Polozhentseva J.A., Alekseeva E.V., and Karushev M.P. "Semiconductor Properties of Polymer Films Based on Nickel Complexwith Salen-type Ligand." Physics of the Solid State 64, no. 1 (2022): 62. http://dx.doi.org/10.21883/pss.2022.01.52489.166.

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Metal complexes of Schiff bases are considered as promising materialsfor energy storage and photovoltaic devices. In this work, thesemiconducting properties of a polymer film of a nickel salen-type complex(poly-Ni(CH3O-Salen)) were studied by spectrophotometric and electrochemicalimpedance spectroscopy methods. The Mott-Schottky analysis showed that the polymerfilm is a semiconducting material with a fairly narrow band gap, high chargecarrier density and p-type conductivity. Using the method of electrochemicalimpedance spectroscopy, the limiting stage of the oxygenphotoelectroreduction reactio

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Abid, Samara Hamid, and Haider A. Mahdi. "Synthesis and Anti-Oxidant Properties of Some New Schiff Bases Containing Azole Moieties." INDIAN JOURNAL OF HETEROCYCLIC CHEMISTRY 34, no. 01 (2024): 67. http://dx.doi.org/10.59467/ijhc.2024.34.67.

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Four new Schiff bases (L1-L4) were synthesized and characterized on the basis their spectra of 1H-NMR, 13C-NMR, Fourier transform infrared, and elemental analysis (CHN). The program Gaussian 09 software and DFT-based B3LYP method along using the 6-31G+(d,p) basis set were used for theoretical accounts. The antioxidant activity of the synthesized compounds was evaluated by DPPH scavenger and these compounds showed good antioxidant activity.. KEYWORDS :Antibacterial, Antioxidant, Azomethine, Schiff base.

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Temizkan, Kevser, and İsmet Kaya. "Heat resisting and water-soluble chocolate polyesters containing azomethine group." Materials Science-Poland 35, no. 2 (2017): 303–12. http://dx.doi.org/10.1515/msp-2017-0018.

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Abstract In this study, soluble in water poly(azomethine-ester)s (PAEs) were synthesized via elimination reactions of aromatic dihydroxy compounds containing imine bonding with terephthaloyl chloride. The structures of Schiff bases (SBs) and PAEs containing different aliphatic chains were confirmed by FT-IR, 1H-NMR, 13C-NMR and UV-Vis analyses. Physicochemical properties of the new polymers were characterized. Thermal properties of the compounds were investigated by TGA-DTA, DMA and DSC. According to TGA measurements, the starting degradation temperatures (Ton) of P-1, P-2, P-3, and P-4 poly(a

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Padmaja, Devi M. S* Dr. Prasobh G.R. Dr. Sandhya S.M Visal C. S. Reena Athira. "SYNTHESIS AND SCREENING OF ANALGESIC AND ANTI-INFLAMMATORY ACTIVITY OF NOVEL BENZTRIAZOLE DERIVATIVES." INDO AMERICAN JOURNAL OF PHARMACEUTICAL SCIENCES o6, no. 07 (2019): 13632–48. https://doi.org/10.5281/zenodo.3345871.

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<em>Benzotriazole is a  lead molecule for designing potential bioactive molecule. Benzotriazole and its derivatives exhibits anti inflammatory, analgesic, antimicrobial and anticonvulsant activities. 1,2,4 triazole is one of the most biologically active classes of compounds possessing wide spectrum of activities including anti-inflammatory, analgesic, CNS stimulants, sedatives, antianxiety, antimicrobial agents and antimycotic agents. In this study, we planned to synthesize various Schiff’s bases of 5 [1H,1,2,3 benzotriazol 1yl methyl] 4 [substituted amino]4H-1,2,4 triazole-3 &ndash

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Valarmathy, Govindaraj, Ramanathan Subbalakshmi, Rajendran Nithya, Ragu Nandhini, Balachandaran Sabarika, and Elanchleiyan Aarthy. "Synthesis, Spectral Characterisation and Cytotoxic Evaluation of Substituted Sulfonamide Schiff Bases." Indian Journal of Science and Technology 14, no. 34 (2021): 2731–41. https://doi.org/10.17485/IJST/v14i34.888.

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Abstract <strong>Objectives:</strong> To synthesize Schiff bases i.e 4-((2-hydroxybenzylidene)-amino–N-(5-methyl-1,2-oxozol-3- yl)benzene sulphonamide (L1), 4-((2-hydroxy benzylidene)-amino-N-(thiazol-yl)benzene sulphonamide (L2), 4-((2-hydroxybenzylidene)amino-N-(pyridin-2-yl)benzene sulphonamide by theaction of 2-hydroxybenzaldehyde with sulfathiazole/ sulfamethoxazole/ sulfapyridine in ethanolic media. <strong>Methods:</strong> The Schiff bases obtained were characterized by analytical data, IR, UV, 1H- NMR, 13C-NMR, Mass spectrum and monitored for cytotoxic activity ag

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Kareem, May Joda. "Synthesis, Spectroscopic Study and Biological Activity of new Bidentate Schiff Base (4-(Dimethylamino) Benzylidene)-5-(3,4,5-Trimethoxybenzyl)-5 Pyrimidine-2,4-Diamine) and Transition Metal Mn(II), Ni(II) and Cu(II) Complexes." Pakistan Journal of Medical and Health Sciences 16, no. 5 (2022): 655–59. http://dx.doi.org/10.53350/pjmhs22165655.

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The Schiff bases ligand (L1) was synthesized by condensing (2,4-diamine (Trimethoxybenzyl 3,4,5)-5 pyrimidine) and (4-dimethylamino benzaldehyde). The transition metal complexes of [Mn(L1)2Cl2], [Ni(L1)2Cl2], and [Cu (L1)2Cl2] were then produced. The ligand and its metal complexes Mn(II), Ni(II), and Cu(II) were examined by analyzing the elemental composition, the metal content, the chloride content, and the molar conductance, FT-IR, 1H-NMR, UV-Vis spectra, magnetic susceptibility, mass spectra, and thermal analysis (TGA). The results indicated that the ligand behaves as a bidentate ligand in

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Salman Jasim, Husam, Zainab A. Al-kubaisi, and Hanady S. Al-Shmgani. "Cytotoxic potential activity of quercetin derivatives on MCF-7 breast cancer cell line." Bionatura 8, no. 1 (2023): 1–5. http://dx.doi.org/10.21931/rb/2023.08.01.92.

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Many previous investigations have found quercetin to be a powerful antioxidant and antitumor flavonoid, but its poor bioavailability has limited its use. This current study investigated the effects of two newly synthesized Quercetin Schiff bases containing 2-amino thiadiazole-5-thiol (Q1), and its benzyl derivatives (Q2) on MCF-7 human breast cancer cells. Cell viability and apoptosis were assessed to determine the toxic effects of Q1 and Q2. Cytotoxicity valuation showed that both compounds inhibited MCF-7 cell growth, and lactate dehydrogenase (LDH) activity increased in a dose-dependent asp

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Ovchinnikov, Aleksandr N., and Antonio Paoli. "Saliva as a Diagnostic Tool for Early Detection of Exercise-Induced Oxidative Damage in Female Athletes." Biomedicines 12, no. 5 (2024): 1006. http://dx.doi.org/10.3390/biomedicines12051006.

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Although blood still remains the most commonly utilized medium to detect increased levels of oxidative damage induced by exercise, saliva diagnostics have gained increasing popularity due to their non-invasive nature and athlete-friendly collection process. Given that the contribution of various phases of the menstrual cycle to the levels of oxidative damage may differ, the aim of this study was to evaluate an agreement between salivary and plasmatic levels of lipid peroxidation products in female swimmers in both the follicular (F) and luteal (L) phases of the menstrual cycle at rest and foll

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Login, Cristian Cezar, Ioana Bâldea, Brînduşa Tiperciuc, et al. "A Novel Thiazolyl Schiff Base: Antibacterial and Antifungal Effects and In Vitro Oxidative Stress Modulation on Human Endothelial Cells." Oxidative Medicine and Cellular Longevity 2019 (October 10, 2019): 1–11. http://dx.doi.org/10.1155/2019/1607903.

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Schiff bases (SBs) are chemical compounds displaying a significant pharmacological potential. They are able to modulate the activity of many enzymes involved in metabolism and are found among antibacterial, antifungal, anti-inflammatory, antioxidant, and antiproliferative drugs. A new thiazolyl-triazole SB was obtained and characterized by elemental and spectral analysis. The antibacterial and antifungal ability of the SB was evaluated against Gram-positive and Gram-negative bacteria and against three Candida strains. SB showed good antibacterial activity against L. monocytogenes and P. aerugi

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Jaiswal, Amit, Anil Kumar Pal, Dharmendra Kumar Sahu, and Ranjeet Kumar. "Synthesis and characterizations of Hg (II) Complex of Macrocyclic complexes compounds Tetradecahydrodibenzo hexaazacyclooctadecine with HgX2 (X= Cl, Br) by Hirshfeld analysis and antimicrobial activity." Journal of Drug Delivery and Therapeutics 14, no. 3 (2024): 115–21. http://dx.doi.org/10.22270/jddt.v14i3.6476.

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This study examines the synthesis and characterization of a macrocyclic complex molecule having the general formula [M-LX2], where M =Hg (II) with schiff base Tetradecahydrodibenzo hexaazacyclooctadecine ligands. Resulted from the interaction between mercury and the diethyl triamine and benzene- 1, 2 diol in an ethanolic solution. Schiff base and its novel mercury (II) Complexes were studied vibrational in the solid state using spectral, 1H-NMR, IR, UV, and antimicrobial activity approaches. We were able to establish the coordination mode of the metal in complexes by comparing the changes in t

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35

Ajima, Ukpe, Johnson Ogoda Onah, Mary Tuga Kuje, Umar David Muhammed, Vuyisa Mzozoyana, and Stephen Olalekan Ojerinde. "Synthesis, characterization and cytotoxic activity of 5- aminotetrazole Schiff bases." Journal of Pharmacy & Bioresources 18, no. 1 (2021): 32–39. http://dx.doi.org/10.4314/jpb.v18i1.4.

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The incidence and prevalence of cancer has been on the rise in recent years and this has been linked to environmental factors, adoption of westernized lifestyle and aging populations. This situation is further complicated by the inadequacies of currently used anticancer agents such as toxicity and resistance which has prompted the search for new and more effective drugs. In this study, Schiff bases of 5-aminotetrazole were prepared by condensing 5- aminotetrazole with various aromatic aldehydes. Preliminary confirmation of compound formation was done using thin layer chromatography while FT-IR

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Riar, G. K., D. Utreja, A. Kalia, and S. Kaur. "Synthesis and antipathogenic evaluation of isatin-indole Schiff bases as potent nematicidal and agrochemical agents." INDIAN JOURNAL OF HETEROCYCLIC CHEMISTRY 35, no. 02 (2025): 295. https://doi.org/10.59467/ijhc.2025.35.295.

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N-alkylated Schiff bases of isatin-indole were synthesized through the reaction of isatin hydrazide with indole-3-carbaldehyde followed by N-alkylation. The synthesized isatin-indole Schiff bases were evaluated for their in vitro antimicrobial activity against the pathogenic bacteria Dickeya sp. and Streptomyces sp., as well as the fungi Fusarium oxysporum and Rhizoctonia solani. In addition, their nematicidal potential was assessed against the tomato parasite Meloidogyne incognita through egg hatch inhibition and J2 mortality assays. The compounds were further evaluated for their inhibitory a

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Singh, Anil K., Camille Sandorfy, and Janos H. Fendler. "Retinylidene Schiff bases in surfactant-solubilized water pools in heptane." Canadian Journal of Chemistry 68, no. 9 (1990): 1514–22. http://dx.doi.org/10.1139/v90-233.

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All-trans-retinal (1) was reacted with n-butylamine in sodium bis(2-ethylhexyl)sulfosuccinate (AOT) reverse micelles in heptane to form all-trans-N-retinylidene–n-butylamine Schiff bases (2). The extent of protonation of 2 by 3-chloropropionic acid (CPA) to give 3 in AOT reverse micelles in heptane was found to depend on the ratio of [CPA] to [2], as well as on [H2O]/[AOT] (i.e., on the ω value). At any given [2] and ω values, increasing amounts of CPA increased the protonation and at any given constant [2] and [CPA], increasing ω values also increased the protonation. Over a period of 24 hour

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Sahib, Halah A., and Mohammed H. Mohammed. "Synthesis and Preliminary Biological Activity Evaluation of New N- Substituted Phthalimide Derivatives." Iraqi Journal of Pharmaceutical Sciences ( P-ISSN: 1683 - 3597 , E-ISSN : 2521 - 3512) 29, no. 1 (2020): 247–52. http://dx.doi.org/10.31351/vol29iss1pp247-252.

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A A new series of bases of Schiff (H2-H4) derived from phthalic anhydrideweresynthesized. These Schiff bases were prepared by the reaction of different amines (tyrosine methyl ester, phenylalanine methyl ester, and isoniazid) with the phthalimide derived aldehyde with the aid of glacial acetic acid or triethylamine ascatalysts. All the synthesized compounds were characterized by (FT-IR and 1HNMR) analyses and were in vitro evaluated for their antimicrobial activity against six various kinds of microorganisms. All the synthesized compounds had been screened for their antimicrobial activit

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Kamatam, Prasuna M., Vanitha Sanambatla, and Seshaiah Kalluru. "Biological studies of Schiff base, 2-(1-hydroxycyclohexyl) phenyl methylene hydrazine carbothioamide and its Cu(II) and Zn(II) metal complexes." Journal of medical pharmaceutical and allied sciences 11, no. 2 (2022): 4666–71. http://dx.doi.org/10.55522/jmpas.v11i2.2621.

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Condensation of 1-hydroxycyclohexyl phenyl ketone with hydrazine carbothioamide produced a new Schiff base, 2-(1-hydroxycyclohexyl) phenyl methylene hydrazine carbothioamide. The Cu(II) and Zn(II) metal complexes of the Schiff base were prepared. The different spectroscopic methods such as FT-IR, UV-Visible, 1H NMR, and 13C NMR spectroscopy were used to elucidate the structural characteristics of the synthesized compounds. Further, the biological applications of the prepared Schiff bases and its metal complexes were studied for the antibacterial activity. The antimicrobial investigation was ca

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Ali, M. M., M. Jesmin, S. M. A. Salam, J. A. Khanam, M. F. Islam, and M. N. Islam. "Pesticidal Activities of Some Schiff Bases Derived from Benzoin, Salicylaldehyde, Aminophenol and 2,4 Dinitrophenyl Hydrazine." Journal of Scientific Research 1, no. 3 (2009): 641–46. http://dx.doi.org/10.3329/jsr.v1i3.2585.

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The pesticidal activities of three Schiff bases namely PDH [N- (1 phenyl 2 hydroxy 2 phenyl ethylidine) 2¢4¢ dinitrophenyl hydrazine], PHP [N(1-phenyl 2 hydroxy -2 phenyl ethylidine) 2¢ hydroxy phenyl imine] and HHP [N (2-hydroxy benzylidine) 2¢ hydroxy phenyl imine] derived from benzoin, salicylaldehyde, 2 aminophenol and 2,4 dinitrophenyl hydrazine were evaluated against Tribolium castaneum. Probit mortality were studied by surface film treatment method at different doses of the compounds. The results showed that the LD50 values as recorded after 24 hours of treatment were 15.1268, 3.0922 an

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Ghafil, Amer, and Shaimaa Adnan. "Synthesis and Characterization of Heterocyclic Derivatives from 5-Aminotetrazole and Investigation of Their Biological Activities." INDIAN JOURNAL OF HETEROCYCLIC CHEMISTRY 34, no. 01 (2024): 107. http://dx.doi.org/10.59467/ijhc.2024.34.107.

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This study included the synthesis of some new heterocyclic compounds starting with 5-aminotetrazole, which reacted with 2-hydroxy-4-methoxybenzaldehyde to get compound 1. Then, 1 was converted to a Schiff base (2) derivative by reacting 1 with 2-aminothiazole. Then, compound 2 was reacted with different compounds, namely alanine, 2-mercaptoacetic acid, 2-aminobenzoic acid, phthalic anhydride, and malic anhydride, leading to the heterocyclic products imidazolidine (3), thiazolidine (4), quinazoline (5), and oxazepane (6) derivatives, respectively. All these compounds are characterized by 13C-NM

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42

Mahnashi, Mater H., B. H. Prabhanjana, Sudarshan Seetammanavar, et al. "Synthesis and in silico studies of some new Schiff bases as antimicrobial and antitubercular agents." INDIAN JOURNAL OF HETEROCYCLIC CHEMISTRY 35, no. 01 (2025): 141. https://doi.org/10.59467/ijhc.2025.35.141.

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Ten pyridine carbohydrazide Schiff bases (3a-3e) and (5a-5e) were synthesized by refluxing pyridine carbohydrazides 1 and 4 with different ketones in the presence of ethanol and a few drops of glacial acetic acid. The synthesized compounds were biologically screened for antitubercular and antibacterial activity studies. The fit of these compounds within the active sites of the dihydrofolate reductase (DHFR) and enoyl ACP reductase was evaluated using molecular modeling techniques. The findings of the anticipated ADMET investigation showed that the compounds with the given names have drug-like

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43

Sharma, Abhishek Shankar, Salahuddin Salahuddin, Kavita Rana, et al. "Synthesis, anticonvulsant potential, and molecular docking studies of Schiff bases bearing 2', 6-dichloro-2,3'-biquinoline." INDIAN JOURNAL OF HETEROCYCLIC CHEMISTRY 35, no. 01 (2025): 119. https://doi.org/10.59467/ijhc.2025.35.119.

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In the present manuscript, a series of new 2',6-dichloro-N'-(substituted-benzylidene)-[2,3'-biquinoline]-4- carbohydrazides (6a-l; Schiff bases) has been synthesized by the reaction of 2',6-dichloro-[2,3']biquinolinyl-4-carboxylic acid hydrazide (5) with substituted benzaldehydes. All compounds have been screened for anticonvulsant potential by using the subcutaneous pentylenetetrazole model. From the entire series the compounds 6a, 6c, and 6e showed protection against convulsions at the dose concentration of 30 mg/kg body weight in correlation with conventional drug (phenytoin). The molecules

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Kumar, Rohit, Sushil Kumar, and Mohammad Asif Khan. "Synthesis and Pharmacological Evaluation of 2-(4-(3 (Substituted Phenyl) Acryloyl) Phenoxy)-N, N Diphenylacetamides." Journal of Drug Delivery and Therapeutics 10, no. 5 (2020): 274–92. http://dx.doi.org/10.22270/jddt.v10i5.4326.

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Recently a series of Schiff bases of diphenylamine derivatives have been synthesized and evaluated in vitro for their antibacterial activity against pathogenic both Gram-positive bacteria B. subtitles and Gram-negative bacteria E. coli using ciprofloxacin as standard drug at conc. of 50 μg/ml and 100 μg/ml. Literature review revels that chalcones possesses various biological activities like antimicrobial, antiviral, anti-inflammatory, anticancer and sedative etc. Therefore the present study was designed on synthesis and pharmacological evaluation of 2-(4-(3 (Substituted Phenyl) Acryloyl) Pheno

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45

Sanambatla, Vanitha, Sathish Kumar Nara, Balaji Hari, Varada Reddy Ammireddy, and Saritha Nimmakayala. "Antimicrobial and antioxidant studies of Schiff base, 2-(2-hydroxy-2-methyl-1-phenylpropylidene) hydrazine carbothioamide and its mixed ligand cd (II) complexes." Journal of medical pharmaceutical and allied sciences 11, no. 1 (2022): 4470–76. http://dx.doi.org/10.55522/jmpas.v11i1.2451.

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New mononuclear mixed ligand Cadmium(II) complexes of the type [Cd(L)(diimine)] (1,2) [where L = 2-(2-hydroxy-2-methyl-1-phenylpropylidene)hydrazinecarbothioamide; diimine = 2,2’-bipyridine (1), 1,10-phenanthroline (2)] have been synthesized and characterized by spectroscopic techniques such as FT-IR, UV-Visible, and1H and 13CNMR Spectroscopy. From the investigations of spectral data, it is evident that the heterocyclic bases (2,2’-bipyridine and 1,10-Phenanthroline) act as neutral bidentate ligand coordinating to the metal ion through two nitrogen donor atoms addition to azomethane nitrogen,

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46

Awad, Hussein, and Shaimaa A. Bahgat. "Synthesis, Identification, Biological Evaluation of Seven-membered Heterocyclic Derivatives from 2,3-di Chloroaniline." INDIAN JOURNAL OF HETEROCYCLIC CHEMISTRY 34, no. 01 (2024): 131. http://dx.doi.org/10.59467/ijhc.2024.34.131.

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This study?s focus was centered on the synthesis of heterocyclic compounds incorporating a seven-membered ring, specifically 1,3-oxazepine. The initial phase of the synthesis involved the preparation of azo compound (1) through the coupling of the diazonium salt of 2,3-dichloroaniline with 4-bromoacetophenone in an alkaline alcoholic medium. This was then succeeded by the reaction of azo compound (1) with 4-nitroaniline and 4-methoxyaniline in absolute ethanol, employing glacial acetic acid as a catalyst, resulting in Schiff base derivatives (2) and (3), respectively. Subsequent to this, Schif

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47

Misra, Sudhindra N., and Shaun O. Sommerer. "The ligand mediated pseudohypersensitivity of the 3H4 → 3P2, 3H4 → 3P1, 3H4 → 3P0, and 3H4 → 1D2 transitions of praseodymium(III) complexes in solution media." Canadian Journal of Chemistry 70, no. 1 (1992): 46–54. http://dx.doi.org/10.1139/v92-009.

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The absorption difference, comparative absorption spectrophotometry, and quantitative analysis of 4f–4f spectra of praseodymium(III) complexes with ligands possessing varying structural features and binding capabilities have clearly indicated that the 3H4 → 3P2, 3H4 → 3P1, 3H4 → 3P0, and 3H4 → 1D2 transitions exhibit substantial intensification as well as a wide variation of oscillator strength. Since these transitions do not follow the selection rules they cannot be considered hypersensitive. Ligands such as β-diketones, Schiff bases, amino acids, diols, nucleic bases, nucleosides, nucleotide

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Mohammed Abduljleel, Abduljleel, Jassim Mohammed Saleh Alshawi, kawkab Ali Hussein, and Sadiq M.-H. Ismael. "Synthesis, characterization, biological studies and DFT study of Schiff Bases and their complexes derived from aromatic diamine compounds with cobalt (II)." Bionatura 8, no. 1 (2023): 1–9. http://dx.doi.org/10.21931/rb/2023.08.01.61.

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Based on vanillin and diamine compounds (ortho phenylene diamine, meta phenylene diamine, 3,4- diamine toluene), derivation of two new Schiff base ligands (L1 and L2) was done, after which synthesis and treatment with Co (II) chloride was performed at a metal-to-ligand ratio of 1:1 to get two new complexes, i.e. [CoL3(H2O)2]Cl2 and [CoL1(H2O)2]Cl2. These complexes and ligands were characterized by employing NMR, IR, atomic absorption, UV visible absorption, molecular weight determination, molar conductance, and magnetic measurement techniques. As per the data, the ligands were found to be bide

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Dr., Faizan Sayeed1* Abdul Sayeed1 MD Akram1 Mohd Waseem Akram2. "DESIGN, SYNTHESIS AND PHARMACOLOGICAL EVALUATION OF NEW SUBSTITUTED THIAZOLIDIN-4- ONE DERIVATIVES." Indo American Journal of Pharmaceutical Sciences 04, no. 08 (2017): 2461–72. https://doi.org/10.5281/zenodo.846845.

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4-thiazolidinones are among t h e most extensively investigated class of organic compounds. Thiazolidin-4-one has been considered as magic moiety, which is a core structure in various synthetic pharmaceuticals displaying a broad spectrum of biological activities.They are widely used as anti-inflammatory, anticonvulsant, analgesic, antimicrobial,anti-HIV,CNS depressant, carcinostatic, antihypertensive and cytotoxic. In view of the wide spectrum activities of condensed 4-thiazolidinones, it was thought worthwhile to undertake the synthesis of heterocyclic systems in which 4-thiazolidinone nucleu

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50

Freiesleben, Doris, Kurt Polborn, Christian Robl, Karlheinz Sünkel, and Wolfgang Beck. "Metal complexes of biologically important ligands, LXXVIII. Synthesis of palladium complexes of ferrocenyl-substituted amino acid derivatives." Canadian Journal of Chemistry 73, no. 7 (1995): 1164–74. http://dx.doi.org/10.1139/v95-143.

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Schiff bases from ferrocene aldehyde and α-amino acidates react with PdCl2 or Na2PdCl4 to give N,O-chelate complexes (2a–e, 3). The related N-ferrocenylmethylen-α-amino acid esters give, with Pd(OAc)2, cyclopalladated acetate-bridged complexes (4a,b). N,O-chelate complexes (5–7) are obtained from Na2PdCl4 with N-ferrocenylmethyl prolinate and-alaninate as well as with N,N-dibenzyl glycinate. The ethyl ester of N,N-dibenzylglycine and Pd(OAc)2 form the cyclopalladated acetate-bridged complex 8, while the ester of N-monobenzylglycine and Na2PdCl4 affords trans-PdCl2(L)2 with a monodentate N-coor

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