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Journal articles on the topic 'Thiazolo'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Hosseini, Akram Karbalaee, and Azadeh Tadjarodi. "Luminescent MOFs Based on Thiazolo[5,4-d]thiazole as a Chemosensor for the Detection of Environmental Contaminants." Journal of Nanotechnology and Nanomaterials 5, no. 1 (2024): 1–6. http://dx.doi.org/10.33696/nanotechnol.5.047.

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Luminescent metal-organic frameworks (LMOFs) are considered special candidates for the sensation and detection of particular analytes. Thiazolo[5,4-d]thiazoles (TTZs) are an ideal type of heterocycles for fluorophores with π-bridge moieties demonstrating structure-function characteristics. LMOFs with excellent sensing properties can be constructed by incorporating heterocyclic aromatic thiazolo[5,4-d]thiazole into the framework. This study has elaborated on LMOFs containing thiazolo[5,4-d]thiazole unit for the detection of environmental contaminants, such as toxic anions, aromatic compounds, a

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2

Vinogradov, Dmitry B., Alexei N. Izmest’ev, Angelina N. Kravchenko, Yuri A. Strelenko, and Galina A. Gazieva. "Synthesis of imidazo[4,5-e][1,3]thiazino[2,3-c][1,2,4]triazines via a base-induced rearrangement of functionalized imidazo[4,5-e]thiazolo[2,3-c][1,2,4]triazines." Beilstein Journal of Organic Chemistry 19 (July 28, 2023): 1047–54. http://dx.doi.org/10.3762/bjoc.19.80.

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A series of imidazo[4,5-e][1,3]thiazino[2,3-c][1,2,4]triazines was synthesized via a cascade sequence of hydrolysis and skeletal rearrangement of imidazo[4,5-e]thiazolo[2,3-c][1,2,4]triazin-7(8H)-ylidene)acetic acid esters in methanol upon treatment with excess KOH. Imidazo[4,5-e]thiazolo[3,2-b][1,2,4]triazin-6(7H)-ylidene)acetic acid esters are also suitable substrates for the reaction. In this case hydrolysis and thiazole ring expansion were accompanied with the change of the thiazolotriazine junction type from thiazolo[3,2-b][1,2,4]triazine to thiazino[2,3-c][1,2,4]triazine.

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3

Borysiuk, Olha, Vasyl Zhylko, Lesya Saliyeva, et al. "Synthesis and biological activity of 2-arylidene-5,6-dihydroimidazo[2,1-b]thiazoles and 6,7-dihydro-5h-[1,3]thiazolo[3,2-a]pyrimidines." ScienceRise: Pharmaceutical Science, no. 2 (54) (April 30, 2025): 22–28. https://doi.org/10.15587/2519-4852.2025.326521.

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The aim. The present study is devoted to searching for potential biologically active agents among functionalized imidazo[2,1-b]thiazoles and thiazolo[3,2-a]pyrimidines. Materials and methods. The interaction of preparatively available 5,6-dihydroimidazo[2,1-b]thiazolone and 6,7-dihydro-2H-thiazolo[3,2-a]pyrimidinone with several substituted benzaldehydes in boiling acetic acid in the presence of anhydrous sodium acetate leads to new 2-arylidene-substituted 5,6-dihydroimidazo[2,1-b]thiazoles and 6,7-dihydro-5H-[1,3]thiazolo[3,2-a]pyrimidines as potential pharmacological agents. Their antimicrob

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4

Tokárová, Zita, and Anna Biathová. "Synthesis and structure-physicochemical properties relationship of thiophene-substituted bis(5,4-d)thiazoles." Nova Biotechnologica et Chimica 17, no. 2 (2018): 193–200. http://dx.doi.org/10.2478/nbec-2018-0020.

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Abstract Substituted thiophene-2-carbaldehydes 1a-dwere utilized in the synthesis of symmetrically substituted thiazolo[5,4-d]thiazoles 3a-d. Bis(5,4-d)thiazoles with thiophene core at the termini are the most employed in the chemistry of materials but exhibit insufficient solubility in majority of organic solvents with notable impact on the low yields of products. Accordingly, the synthetic approach towards 2,5-dithiophen- 2-yl-thiazolo[5,4-d]thiazole (3a) and its substituted derivatives 3b-d is discussed under the various reaction conditions. Appropriate structural characterisations are incl

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5

Slyvka, N. Yu, L. M. Saliyeva, V. I. Zhylko, V. M. Tkachuk, and M. V. Vovk. "Synthesis and antioxidant activity of new 2-(2-oxoindoline-3-ylydene) substituted 5,6-dihydroimidazo[2,1-b]thiazolones and 6,7-dihydro-thiazolo[3,2-a]pyrimidinones." Voprosy Khimii i Khimicheskoi Tekhnologii, no. 1 (February 2025): 71–79. https://doi.org/10.32434/0321-4095-2025-158-1-71-79.

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The paper presents the results of the study on the interaction of 5,6-dihydroimidazo[2,1-b]thiazoles and 6,7-dihydrothiazolo[3,2-a]pyrimidines with isatin derivatives. It was established that the condensation of the indicated reagents occurs selectively upon heating and without the use of a catalyst with the formation of addition products, 2-(2-oxoindolin-3-ylidene)-5,6-dihydroimidazo[2,1-b]thiazole-3(2H)-ones 6a–d and 2-(2-oxoindolin-3-ylidene)-6,7-dihydro-2H-thiazolo[3,2-a]pyrimidin-3(5H)-ones 7a–c, the structure of which was rigorously proven by 1H NMR (13C) spectroscopy and chromatography-

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6

Tokárová, Zita, Renáta Gašparová, Natália Kabaňová, Marcela Gašparová, and Róbert Balogh. "Hemetsberger–Knittel and Ketcham Synthesis of Heteropentalenes with Two (1:1), Three (1:2)/(2:1) and Four (2:2) Heteroatoms." Reactions 4, no. 2 (2023): 254–73. http://dx.doi.org/10.3390/reactions4020015.

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The synthetic methods leading to furo[3,2-b]pyrroles and thiazolo [5,4-d]thiazoles are reviewed herein. Furo-, thieno- and seleno [3,2-b]pyrroles are related to heteropentalenes, containing two heteroatoms in the entire structure, one each per core. The synthetic approach follows the Hemetsberger–Knittel protocol covering three reaction steps—the nucleophilic substitution of halogen-containing aliphatic carboxylic acid esters, Knoevenagel condensation and, finally, thermolysis promoting the intramolecular cyclocondensation to O,N-heteropentalene. The Hemetsberger–Knittel reaction sequence is a

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7

Nguyễn, Thiên Thuý Trang, Jean-François Longevial, and Stéphanie Hesse. "Synthesis of Thiazolo[5,4-d]thiazoles in an Eco-Friendly L-Proline–Ethylene Glycol Mixture." Molecules 30, no. 4 (2025): 938. https://doi.org/10.3390/molecules30040938.

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The hazardousness of solvents used in synthetic organic chemistry is well established. In this context, it is relevant to search for safer and greener alternatives. Within the last decades, deep eutectic solvents have been considered as possible and promising alternatives. Consequently, this study aims at using deep eutectic solvents to synthesize an emerging class of heteroaromatic compounds named thiazolo[5,4-d]thiazoles, for which interest is growing in the field of organics, electronics, and biology. To address this challenge, we developed a straightforward synthetic protocol consisting of

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8

Fizer, O. I., M. M. Fizer, A. O. Kryvoviaz, and M. V. Slivka. "INVESTIGATION OF THE INFLUENCE OF THE SUBSTITUTE IN THE THIRD POSITION ON THE ELECTRONIC STRUCTURE OF 1,3-THIAZOLO[2,3-c][1,2,4]TRIAZOLE." Scientific Bulletin of the Uzhhorod University. Series «Chemistry» 46, no. 2 (2022): 55–62. http://dx.doi.org/10.24144/2414-0260.2021.2.55-62.

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Condensed 1,2,4-triazole derivatives exhibit a wide range of biological activity. In particular, triazolam, alprazolam and estazolam, which contain [1,2,4]triazolo[4,3-a][1,4]benzodiazepine system, are used as tranquilizers. Brotizolam is another tranquilizer, a derivative of thieno[3,2-f][1,2,4]triazolo [4,3-a][1,4]diazepine. The oral hypoglycemic drug sitagliptin contains the [1,2,4]triazolo[4,3-a]pyrazine system. In addition, pesticides such as flumetsulam, metosulam, cloransulam, diclosulam, florasulam, are derivatives of [1,2,4]triazolo[1,5-a]pyrimidine, [1,2,4]triazolo[1,5-c]pyrimidine a

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9

Hua, Shuanghui, Jimin Moon, and Taeho Lee. "The Facile Solid-Phase Synthesis of Thiazolo-Pyrimidinone Derivatives." Molecules 30, no. 2 (2025): 430. https://doi.org/10.3390/molecules30020430.

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A thiazolo-pyrimidinone derivative library was developed through a facile solid-phase synthesis method. For the reaction, the thiazolo[4,5-d]pyrimidin-7(6H)-one structure was synthesized through efficient Thorpe–Ziegler and cyclization reactions. The thiazolo[4,5-d]pyrimidin-7(6H)-one derivative library with a diversity of three had a total of four synthesis steps and 57 compounds. In addition, the yield per synthesis step was 65–97%, which was very high. The developed synthesis method and compounds will be used to find compounds with biological activity through the thiazole derivative structu

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10

Olgun, U., and M. Gülfen. "Effects of different dopants on the band gap and electrical conductivity of the poly(phenylene-thiazolo[5,4-d]thiazole) copolymer." RSC Adv. 4, no. 48 (2014): 25165–71. http://dx.doi.org/10.1039/c4ra02425g.

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11

Kudrjasova, Julija, Roald Herckens, Huguette Penxten, et al. "Direct arylation as a versatile tool towards thiazolo[5,4-d]thiazole-based semiconducting materials." Org. Biomol. Chem. 12, no. 26 (2014): 4663–72. http://dx.doi.org/10.1039/c4ob00360h.

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12

Samal, Mahalaxmi, Sreeramulu Valligatla, Nabil A. Saad, et al. "A thiazolo[5,4-d]thiazole-bridged porphyrin organic framework as a promising nonlinear optical material." Chemical Communications 55, no. 74 (2019): 11025–28. http://dx.doi.org/10.1039/c9cc05415d.

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13

Olgun, U., and M. Gülfen. "Low-band gap and fluorescent poly(triphenylamine-thiazolo[5,4-d]thiazole) copolymer dye." RSC Advances 5, no. 24 (2015): 18710–19. http://dx.doi.org/10.1039/c4ra16152a.

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14

Hitesh, Hitesh Amrutlal. "Synthesis, Characterization and Antifungal Activity of Novel Thiazolo-Pyrimidine Fused Heterocycles." ECS Transactions 107, no. 1 (2022): 1165–72. http://dx.doi.org/10.1149/10701.1165ecst.

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In medicinal chemistry, nitrogen and sulphur containing heterocyclic compounds are well known for their therapeutic properties.(1) Among them thiazole and pyrimidine derivatives possess diverse pharmaceutical activities.(2,3) More particularly thiazolo-pyrimidine fused shows various therapeutically activities like, anticancer, antimicrobial, antibacterial effects, antiviral ,etc (4-7). Such type of fused heterocycles containing furan and naphthalene moieties has not been developed. Thus, the aim of the present work to study the novel fused thiazolo-pyrimidine derivatives, their characterizatio

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15

Lan, Zheng, and Wang. "2-(3,5-Dimethyl-1H-pyrazol-1-yl)thiazolo[4,5-b]pyridine." Molbank 2019, no. 3 (2019): M1077. http://dx.doi.org/10.3390/m1077.

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The compound 2-(3,5-dimethyl-1H-pyrazol-1-yl)thiazolo[4,5-b]pyridine (1) was synthesized with a yield of 71% by the reaction of 1-(thiazolo[4,5-b]pyridine-2-yl)hydrazine and acetylacetone. The structure was characterized by a single-crystal X-ray structure determination as well as 1H and 13C{1H} NMR spectroscopy. X-ray crystallography on 1 confirms the molecule consists of a pyridine–thiazole moiety and the pyrazole ring, and all non-hydrogen atoms are planar.

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16

Nazim, M., Sadia Ameen, M. Shaheer Akhtar, Hyung-Kee Seo та Hyung-Shik Shin. "Furan-bridged thiazolo [5,4-d]thiazole based D–π–A–π–D type linear chromophore for solution-processed bulk-heterojunction organic solar cells". RSC Advances 5, № 9 (2015): 6286–93. http://dx.doi.org/10.1039/c4ra13655a.

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Novel furan-bridged thiazolo[5,4-d]thiazole based π-conjugated organic chromophore (RFTzR) was formulated and utilized for the fabrication of solution-processed small molecule organic solar cells (SMOSCs).

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17

Bolognesi, A., M. Catellani, S. Destri, and W. Porzio. "Structure of thiazolo[5,4-d]thiazole." Acta Crystallographica Section C Crystal Structure Communications 43, no. 11 (1987): 2106–8. http://dx.doi.org/10.1107/s010827018708884x.

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18

Dessì, Alessio, Massimo Calamante, Adalgisa Sinicropi, et al. "Thiazolo[5,4-d]thiazole-based organic sensitizers with improved spectral properties for application in greenhouse-integrated dye-sensitized solar cells." Sustainable Energy & Fuels 4, no. 5 (2020): 2309–21. http://dx.doi.org/10.1039/d0se00124d.

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Semitransparent dye-sensitized solar cells (DSSCs) for greenhouse integration were manufactured by using especially designed organic dyes featuring different heterocyclic moieties integrated into a thiazolo[5,4-d]thiazole-molecular scaffold.

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19

Wang, Yulong, Yang Wang, Lei Zhu, et al. "A novel wide-bandgap small molecule donor for high efficiency all-small-molecule organic solar cells with small non-radiative energy losses." Energy & Environmental Science 13, no. 5 (2020): 1309–17. http://dx.doi.org/10.1039/c9ee04199k.

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20

Jaberi, Hamid Reza, and Hadi Noorizadeh. "Synthesis of Some Novel Fused Imidazo [2, 1-b] [1, 3] Thiazole and Imidazo [2, 1-b] Thiazolo [5, 4-d] Isoxazole Derivatives." E-Journal of Chemistry 9, no. 3 (2012): 1518–25. http://dx.doi.org/10.1155/2012/896454.

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In this work we describe the synthesis of some novel fused imidazo [2, 1-b] [1, 3] thiazole derivatives. The reaction of 1, 2-diaminoethane 1 with carbon disulphide in H2O/ETOH as solvent furnishes 4, 5-dihydro-1H-imidazol-2-thiol 2 under reflux condition. the reaction of 4,5-dihydro-1H-imidazol-2-thiol on treatment with ethylchloro acetate and aromatic aldehyde in presence of anhydrous sodium acetate and acetic acid as solvent to give (Z)-2-(arylidene)-5,6-dihydroimidazo [2,1-b] [1,3] thiazol-3(2H)-one 3a-j. Compounds 3a-j was condensed with hydroxylamine to give 3-(aryl)-2, 3, 6, 7-tetrahydr

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21

Abe, Noritaka, Hiroyuki Fujii, Akikazu Kakehi, and Motoo Shiro. "Revised Structures, 1-Methylene-1H-[1,4]thiazino[4,3-a]-benzimidazole and 10-Methylene-10H-imidazo[2,1-c][1,4]-benzothiazine Derivatives, for the Cycloadducts Accompanying Rearrangement from Imidazo[2,1-b]benzothiazole and Thiazolo [3,2-a] benzimidazole Derivatives with Propiolic Esters." Journal of Chemical Research 23, no. 5 (1999): 322–23. http://dx.doi.org/10.1177/174751989902300513.

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Formerly-proposed structures, thiazolo[3,2- a] [1,5]benzodiazepine and [1,4]diazepino[7,1- b]benzothiazole derivatives, cycloadducts from the reactions of thiazolo[3,2- a] benzimidazole and imidazo[2,1- b]benzothiazole derivatives with propiolic esters, are revised to methyl 2-[4-methyl-( E)-1 H-[1,4]thiazino[4,3- a]benzimidazol-1-ylidene)methoxycarbonylmethyl]-( E)-acrylate and methyl [2-methyl-( E)-10 H-imidazo[2,1- c] [1,4]benzothiazine-10-ylidene)-methoxycarbonylmethyl]-( E)-acrylate, respectively, whose structures are deduced by X-ray structure analysis.

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22

Urleb, Uro?, Richard Neidlein, and Walter Kramer. "Synthesis of Thiazole and Fused Thiazolo Derivatives." Helvetica Chimica Acta 76, no. 1 (1993): 431–40. http://dx.doi.org/10.1002/hlca.19930760127.

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23

Luo, Laichun, Lanlan Meng, Qi Sun, Zemei Ge, and Runtao Li. "Novel synthesis of thiazolo/thienoazepine-5,8-diones from dihalo cyclic 1,3-diketones and mercaptonitrile salts." RSC Adv. 4, no. 13 (2014): 6845–49. http://dx.doi.org/10.1039/c3ra46606j.

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An efficient approach to thiazolo[4,5-b]azepine-5,8-diones and thieno[3,2-b]azepine-5,8-diones has been developed via a domino synthesis of multifunctionalized thiazoles/thiophenes and further intramolecular cyclization.

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24

Sathiyan, Govindasamy, Rangasamy Thangamuthu, and Pachagounder Sakthivel. "Synthesis of carbazole-based copolymers containing carbazole-thiazolo[5,4-d]thiazole groups with different dopants and their fluorescence and electrical conductivity applications." RSC Advances 6, no. 73 (2016): 69196–205. http://dx.doi.org/10.1039/c6ra08888k.

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The electrical conductivity of poly(carbazole-thiazolo[5,4-d]thiazole) was measured with the introduction of five different dopants (HCl, Fe(iii), Cu(ii), H<sub>3</sub>BO<sub>3</sub>, and I<sub>2</sub>) into its framework through protonation of a nitrogen atom or complex formation.

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25

JAG, MOHAN, VERMA PRATIMA, and KUMAR VINEET. "Bridgehead Nitrogen Heterocycles: Facile Synthesis and Antimicrobial Activity of Thiazolo[ 3,2,b ]-s-tetrazines and Pyrazolo[ 3',4':4,5] thiazoIo[3,2-b ]-s-tetrazines." Journal of Indian Chemical Society Vol. 69, Oct 1992 (1992): 693–96. https://doi.org/10.5281/zenodo.6023015.

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Department of Chemistry, Maharshi Dayananda University, Rohtak-124 001 <em>Manuscript received 19 September 1991, revised 30 June 1992, accepted 16 July 1992</em> Bridgehead Nitrogen Heterocycles: Facile Synthesis and Antimicrobial Activity of Thiazolo[ 3,2,b ]-s-tetrazines and Pyrazolo[ 3',4':4,5] thiazoIo[3,2-b ]-s-tetrazines

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Nagaraju, Pallava, Pedavenkatagari Narayana Reddy, Pannala Padmaja, and Vinod G. Ugale. "Synthesis, Antiproliferative Activity and Molecular Docking of New Thiazole/Benzothiazole Fused Pyranopyrimidine Derivatives." Letters in Organic Chemistry 17, no. 12 (2020): 951–58. http://dx.doi.org/10.2174/1570178617666200319114611.

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A new class of 4H,5H-benzo[4,5]thiazolo[3,2-a]pyrano[2,3-d]pyrimidin-5-one and 5H,6Hpyrano[ 2,3-d]thiazolo[3,2-a]pyrimidin-5-one derivatives were synthesized via the one-pot threecomponent reaction of 2-hydroxy-4H-benzo[4,5]thiazolo[3,2-a]pyrimidin-4-one and 7-hydroxy-5Hthiazolo[ 3,2-a]pyrimidin-5-one to various aromatic aldehydes and malononitrile. This domino transformation involves the formation of pyranopyrimidine ring by the formation of three C–C bonds and one C– O bond a single synthetic operation. As the products precipitate out of the reaction, simple filtration is enough to gather th

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27

Mohareb, Rafat M., Amira E. M. Abdallah, and Ebtsam A. Ahmed. "Synthesis and cytotoxicity evaluation of thiazole derivatives obtained from 2-amino-4,5,6,7-tetrahydrobenzo[b]thiophene- 3-carbonitrile." Acta Pharmaceutica 67, no. 4 (2017): 495–510. http://dx.doi.org/10.1515/acph-2017-0040.

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Abstract Reactivity of 2-amino-4,5,6,7-tetrahydrobenzo[b]thiophene-3- carbonitrile towards thioglycolic acid resulted in thiazole derivative 1. The latter reacted with different chemical reagents to give thiazole, pyrano[2,3-d]thiazole and thiazolo[ 4,5-d]thiazole derivatives. Cytotoxicity effects of the newly synthesized products against six cancer cell lines, namely, human gastric cancer (NUGC), human colon cancer (DLD- 1), human liver cancer (HA22T and HEPG-2), human breast cancer (MCF) and nasopharyngeal carcinoma (HONE-1) as well as against a normal fibroblast cell (WI-38) were evaluated.

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Pinto, M. R., Y. Takahata, and T. D. Z. Atvars. "Photophysical properties of 2,5-diphenyl-thiazolo[5,4- d ]thiazole." Journal of Photochemistry and Photobiology A: Chemistry 143, no. 2-3 (2001): 119–27. http://dx.doi.org/10.1016/s1010-6030(01)00520-2.

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URLEB, U., R. NEIDLEIN, and W. KRAMER. "ChemInform Abstract: Synthesis of Thiazole and Fused Thiazolo Derivatives." ChemInform 24, no. 26 (2010): no. http://dx.doi.org/10.1002/chin.199326130.

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Babul, C. Dutta, Kr. Borthakur Susanta, Boruah Paran та N. Goswami Birendra. "[4+ 2] Cycloaddition reaction : Synthesis and antifungal activities of 5-substituted-4-phenyl-1 ,3-thiazolo[3,2-α ]pyrimidin-6-one derivatives". Journal of Indian Chemical Society Vol. 84, Nov 2007 (2007): 1166–68. https://doi.org/10.5281/zenodo.5824794.

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synthetic Organic Chemistry Division, Medicinal Aromatic & Economic Plant Division, Regional Research Laboratory, Jorhat-785 006, Assam, India <em>E-mail </em>: skbthakur@yahoo.co.in <em>Manuscript received 6 February 2007, revised 25 June 2007, accepted 16 August 2007</em> Syntheses and antifungal activities of 5-substituted-1,3-thiazolo[3,2-α]pyrimidin-6-one from 2-benzylidineamino4-phenyl-1,3-thiazole and ketenes formed <em>in situ </em>is described.

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31

Rössler, Alexander, and Peter Boldt. "Improved access to thiazolo[5,4-d]thiazole and thieno[2,3-d]thiazole." Journal of the Chemical Society, Perkin Transactions 1, no. 4 (1998): 685–88. http://dx.doi.org/10.1039/a707539a.

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32

Patel, K. H., and A. G. Mehta. "Synthesis and Antifungal Activity of Azetidinone and Thiazolidinones Derivatives of 2-Amino-6-(2-naphthalenyl)thiazolo[3,2-d]thiadiazole." E-Journal of Chemistry 3, no. 4 (2006): 267–73. http://dx.doi.org/10.1155/2006/186294.

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2-Amino-6-(2-naphthalenyl)thiazolo[3,2-d]thiadiazole [1] was prepared by treatment of KCNS and Br2on 2-Amino-4-(2-naphthalenyl) thiazole. This amine on facile condensation with aromatic aldehydes afford Schiff Base/anils/azomethines(2a-h). These anils on cyclocondensation reaction with chloro acetyl chloride and thio glycolic acid (i.e. mercapto acetic acid) afford 2-azetidinones and 4-thiazolidinones respectively. The prepared compounds have been screened on some stains of fungai.

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Trigo-López, Miriam, Ana M. Sanjuán, Aranzazu Mendía, Asunción Muñoz, Félix C. García, and José M. García. "Heteroaromatic Polyamides with Improved Thermal and Mechanical Properties." Polymers 12, no. 8 (2020): 1793. http://dx.doi.org/10.3390/polym12081793.

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We prepared high-performance aromatic copolyamides, containing bithiazole and thiazolo-thiazole groups in their main chain, from aromatic diamines and isophthaloyl chloride, to further improve the prominent thermal behavior and exceptional mechanical properties of commercial aramid fibers. The introduction of these groups leads to aramids with improved strength and moduli compared to commercial meta-oriented aromatic polyamides, together with an increase of their thermal performance. Moreover, their solubility, water uptake, and optical properties were evaluated in this work.

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34

El-Emary, T. I., and A. Khodairy. "Synthesis of Thiazolo[5,4-d]pyrimidine, Thiazolo[5,4-b]pyridine, Thiazolo[4,5-b]pyrrolizine and Thiazolo[5,4-d]thiazaphosphinine." Phosphorus, Sulfur, and Silicon and the Related Elements 181, no. 5 (2006): 1073–85. http://dx.doi.org/10.1080/10426500500326362.

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35

El-Din, Abdellatif Salah. "Fused thiazole from 2-(4-phenyl-3(h)-thiazol-2-ylidene) malononitrile: A novel synthesis of thiazolo[3,2- c ]pyrimidine, thiazolo[3,2- a ]pyridine, pyrazolo[3,4- d ]-1,3-thiazolino[2,3- f ]pyrimidine and arylazo thiazolylidene derivatives." Sulfur Letters 26, no. 1 (2003): 35–41. http://dx.doi.org/10.1080/0278611031000104916.

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36

Borde, Ramesh M., Satish B Jadhav, Rahul R Dhavse, and Achut S Munde. "DESIGN, SYNTHESIS, AND PHARMACOLOGICAL EVALUATION OF SOME NOVEL BIS-THIAZOLE DERIVATIVES." Asian Journal of Pharmaceutical and Clinical Research 11, no. 4 (2018): 164. http://dx.doi.org/10.22159/ajpcr.2018.v11i4.23413.

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Objective: A series of substituted 5,2-bis-thiazoles derivatives were synthesized by Hantzsch reaction and evaluated in vitro for antimicrobial activity against Escherichia coli, Pseudomonas aeruginosa, Bacillus subtilis, and Staphylococcus aureus. Methods: 2-(4-(benzyloxy)phenyl)-4-methylthiazole-5-carbothioamide were synthesized and allowed to react with various α-haloketones to give 5,2-bis-thiazoles, i.e., 2-(4-(benzyloxy)phenyl)-4-methyl-5-(4-substituted thiazol-2-yl)thiazole derivatives in excellent yield. The synthesized compounds were characterized by spectroscopic methods as well as e

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37

Bernhardt, Paul V., and Curt Wentrup. "Structures of 4-Iminopyrido[1,2-a]pyrimidines, Pyrido[1,2-a]pyrimidin-4-ones, Pyridopyrimidinium Olates, and Thiazolo[3,2-a]pyrimidine Analogues." Australian Journal of Chemistry 65, no. 4 (2012): 371. http://dx.doi.org/10.1071/ch12040.

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The Structure-Correlation Principle of Bürgi and Dunitz is invoked in an analysis of the structures of 2-chloro-8-methyl-4-(2-(4-picolinyl)imino-4H-pyrido[1,2-a]pyrimidine 8, 7-chloro-5-(2-thiazolyl)imino-5H-thiazolo[3,2-a]pyrimidine 9, 2-methylamino-4H-pyrido[1,2-a]pyrimidin-4-one 10, 7-methylthio-5H-thiazolo[3,2-a]pyrimidin-5-one 11, 2,3-dihydro-7-methylthio-5H-thiazolo[3,2-a]pyrimidin-5-one 12, and 1-methyl-2-[(o-tert-butylphenyl)imino]-1,2-dihydropyrido[1,2-a]pyrimidin-1-ium-4-olate 13, which have been determined by X-ray crystallography. The most notable structural peculiarities are the l

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38

Babu, R. Swethan, Senthilkumar Palaniappan, and M. K. Kathiravan. "Synthesis and Anticancer Activity of Novel Thiazolo-Coumarin Derivatives." Asian Journal of Chemistry 35, no. 1 (2022): 187–93. http://dx.doi.org/10.14233/ajchem.2023.27263.

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As a starting point for creating new inhibitor scaffolds, a molecular hybridization approach was applied in designing the novel molecules using coumarin-thiazole hybrids as mPGES-1 enzyme inhibitors. Thus, in present work, the novel thiazolo coumarin derivatives (8-35) were synthesized and characterized by 1H NMR, IR and ESI-MS spectra. All the synthesized molecules (8-35) were also investigated for their anticancer activity on MCF-7 (breast cancer), caco-2 (colon cancer), HeLa (Cervix cancer) cell lines. Studies revealed that compounds (8-14) and (22-28) showed inhibition (IC50) at different

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39

MOHAMED, KAMAL AHMED IBRAHIM. "Reaction of Nitriles with Mercaptoacetic Acid. Facile Synthesis of Thiazolo[3,2-α] dihydropyridine and Thiazolo [4,5-b] pyran Derivatives". Journal of Indian Chemical Society Vol. 66, June 1989 (1989): 395–97. https://doi.org/10.5281/zenodo.5995109.

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Department of Chemistry, Faculty of Science, Cairo University, Giza, A. R. Egypt <em> Manuscript received 8 October 1987, revised 14 March 1989, accepted 3 April 1989</em> 2-Etboxycarbonyhnethyl-4 thiazolinone (1) reacted with 2 equivalents each of benzenediazonium chloride and benzaldehyde to afford 4-thiazolinone derivatives (2 and 3, respectively). Treatment of 3 with malononitrile, cyanoacetamide, ethyl cyanoacetate, benzoytacetonitrile and cyanoacetanilide gave thiazolo[3,2<em>-</em>α] dihydropyridine derivatives (4, 5, 6, 7 and <em>8, </em>respectively). Azocyanoacetamide

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40

Agarkov, A. S., A. K. Shiryaev, S. E. Solovieva, and I. S. Antipin. "Synthesis, chemocal properties and application of 2-substituted derivatives of thiazolo[3,2-<i>a</i>]pyrimidine." Журнал органической химии 59, no. 3 (2023): 285–315. http://dx.doi.org/10.31857/s0514749223030011.

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The review describes in detail the methods of obtaining thiazolo[3,2- a ]pyrimidines, synthesis and chemical properties of 2-substituted derivatives of thiazolo[3,2- a ]pyrimidines, analysis of crystal structures of 2-arylmethylidene derivatives of thiazolo[3,2- a ]pyrimidines and demonstrates their high antitumor, antibacterial and anti-inflammatory activity.

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41

ROESSLER, A., and P. BOLDT. "ChemInform Abstract: Improved Access to Thiazolo[5,4-d]thiazole and Thieno[2,3-d]thiazole." ChemInform 29, no. 24 (2010): no. http://dx.doi.org/10.1002/chin.199824117.

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42

Rybakov, Victor B., Alexander A. Bush, Sergei I. Troyanov, Eugene V. Babaev, and Erhard Kemnitz. "Unexpected formation of a thiazolo[3,2-a]pyridinium methide: a novel subclass of mesoionic compounds." Acta Crystallographica Section E Structure Reports Online 62, no. 5 (2006): o1673—o1675. http://dx.doi.org/10.1107/s1600536806011135.

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While trying to prepare mesoionic thiazolo[3,2-a]pyridinium-2-thiolate by reaction of 2-bromo-1-(ethoxycarbonylmethyl)pyridinium bromide with CS2, an unexpected product was formed, namely (ethoxycarbonyl)[3-(ethoxycarbonyl)-1,3-thiazolo[3,2-a]pyridin-4-ium-2-yl](2-thioxo-1,2-dihydropyridin-1-yl)methanide, C19H18N2O4S2. The structure of the product corresponds to a previously unknown subclass of mesoionic thiazolo[3,2-a]pyridinium-2-methylides.

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43

Kut, D., M. Kut, M. Onysko, and V. Lendel. "SYNTHESIS OF THIAZOLOQUINAZOLINARYLTELLURID." Scientific Bulletin of the Uzhhorod University. Series «Chemistry» 47, no. 1 (2022): 78–83. http://dx.doi.org/10.24144/2414-0260.2022.1.78-83.

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Symmetric and asymmetric chalcogenides of organic nature are a class of organometallic compounds that are widely used as intermediates in a number of organic reactions, as ligands in the chemistry of coordination compounds, they have a wide range of biological activity. Diaryl tellurides, which are important for the formation of new carbon-carbon bonds, have a special area in the chemistry of organotelluric compounds. The synthesis of new representatives of this class of tellurium-containing compounds is an urgent task. One of the main methods of obtaining of diaryl tellurides is the int

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Zahradník, Peter, Peter Magdolen, and Pavol Zahradník. "Thiazolo[4,5-d]thiazole—a new domain for potential optoelectronic application." Tetrahedron Letters 51, no. 44 (2010): 5819–21. http://dx.doi.org/10.1016/j.tetlet.2010.08.110.

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45

Izmest’ev, Alexei N., Darya A. Vasileva, Elizaveta K. Melnikova, et al. "Skeletal rearrangement of arylmethylideneimidazo[4,5-e]thiazolo[3,2-b]-1,2,4-triazine-2,7-diones in the synthesis of the corresponding imidazo[4,5-e]thiazolo[2,3-c]-1,2,4-triazine-2,8-diones." New Journal of Chemistry 43, no. 2 (2019): 1038–52. http://dx.doi.org/10.1039/c8nj05058a.

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46

Mohareb, Rafat M., Abeer A. Mohamed, and Rehab A. Ibrahim. "Uses of chalcone acetophenone to synthesis heterocyclic compounds with cytotoxic and c-Met kinase activities." Bulletin of the Chemical Society of Ethiopia 36, no. 1 (2022): 149–72. http://dx.doi.org/10.4314/bcse.v36i1.13.

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ABSTRACT. The aim of present study was the uses of a series of α,β-unsaturated carbonyl compounds (chalcones), in the synthesis of pyridine, pyran, thiophene, thiazole, together with their uses in heterocyclic synthesis. The work has resulted in the synthesis of a variety of 2,5-dihydropyridine, hydrazide-hydrazone, thiophene derivatives, coumarin, pyran and thiazolo[4,5-d]thiazole derivatives. The antitumor activities of the newly synthesized products were carried out against three cancer cell lines namely MCF-7, NCI-H460 and SF-268 and normal human cell line WI38. In addition, the inhibition

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47

Papernaya, L. K., A. A. Shatrova, A. V. Kletskov, et al. "Microwave synthesis of new azolyl-substituted thiazolo[5,4-d]thiazoles." Russian Journal of Organic Chemistry 53, no. 4 (2017): 550–56. http://dx.doi.org/10.1134/s107042801704008x.

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48

Kut, D., M. M. Kut, M. Yu Onysko, V. V. Pantyo, E. M. Danko, and G. M. Koval. "ANTIMICROBIAL ACTIVITY OF LINEAR CHALCOGEN-FUNCTIONALIZED DERIVATIVES OF THIAZOLO[2,3-b]QUINAZOLINIUM." Scientific Bulletin of the Uzhhorod University. Series «Chemistry» 52, no. 2 (2024): 59–66. https://doi.org/10.24144/2414-0260.2024.2.59-66.

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The study examines the antimicrobial activity of linear chalcogen-functionalized derivatives in the thiazoloquinazoline series against the pathogen Staphylococcus aureus and investigates the influence of low-intensity laser radiation on the sensitivity of thiazolo[2,3-b]quinazoline chlorides. The research involved synthesizing the investigated thiazolo[2,3-b]quinazoline chlorides via chalcogen-induced cyclization. For the first time, 2,3-dihydro-2-((trichloro-λ4-selanyl)methyl)-5-oxo-8-(trifluoromethyl)-5H-thiazolo[2,3-b]quinazolin-10-ium chloride was obtained, and its structure was confirmed

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El-Hag Ali, G. A. M., M. T. Abd El-Rahman, M. H. M. Helal, and M. S. A. El-Gaby. "Novel Synthesis of Pyrano[2,3-d]Thiazole, Thiazolo[3,2-a]Pyridine, and Pyrazolo [3′,4′:4,5] Thiazolo[3,2-a]Pyridine Derivatives." Phosphorus, Sulfur, and Silicon and the Related Elements 183, no. 12 (2008): 3023–36. http://dx.doi.org/10.1080/10426500802059331.

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50

Raslan, M. A., and S. M. Sayed. "Synthesis of some new thiazolo[3,2‐ a ]pyridine, bi‐thiazole‐thiazole , bi‐thiazole‐pyrazole and bi‐thiazole‐thiophene derivatives." Journal of Heterocyclic Chemistry 57, no. 7 (2020): 2862–74. http://dx.doi.org/10.1002/jhet.3995.

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