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Journal articles on the topic 'Benzo'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Wang, Dezhi, Xi Chen, Hua Yang, et al. "The synthesis of cyclometalated platinum(ii) complexes with benzoaryl-pyridines as C^N ligands for investigating their photophysical, electrochemical and electroluminescent properties." Dalton Transactions 49, no. 44 (2020): 15633–45. http://dx.doi.org/10.1039/d0dt02224a.

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2

Duc, Dau Xuan. "Recent Progress in the Synthesis of Benzo[b]thiophene." Current Organic Chemistry 24, no. 19 (2020): 2256–71. http://dx.doi.org/10.2174/1385272824999200820151545.

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: Benzo[b]thiophenes are aromatic heterocyclic compounds containing benzene and thiophene rings. This class of heterocycles is present in a large number of natural and non-natural compounds. Benzo[b]thiophene derivatives have a broad range of applications in medicinal chemistry such as antimicrobial, anticancer, antioxidant, anti-HIV and antiinflammatory activities. The use of benzo[b]thiophene derivatives in other fields has also been reported. Various benzo[b]thiophenes compounds have been employed as organic photoelectric materials, while several benzo[b]thiophenes have been used as organic

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3

Sedelmeier, G., H. D. Fessner, C. Grund, P. R. Spurr, H. Fritz, and H. Prinzbach. "[6+6]-benzo/benzo - photocycloaddition reactions." Tetrahedron Letters 27, no. 11 (1986): 1277–80. http://dx.doi.org/10.1016/s0040-4039(00)84237-9.

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4

KUMARI, BEEMA, and RAM CHANDRA. "A Review on Bacterial Degradation of Benzo[a]pyrene and Its Impact on Environmental Health." Journal of Experimental Biology and Agricultural Sciences 10, no. 6 (2022): 1253–65. http://dx.doi.org/10.18006/2022.10(6).1253.1265.

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Benzo[a]pyrene is a polycyclic aromatic hydrocarbon (PAH) having a high molecular weight. Benzo[a]pyrene and other PAHs are induces severe acute or chronic human health hazards and are extremely carcinogenic, mutagenic, immunotoxic, and teratogenic. Microorganisms play a crucial part in the degradation of benzo[a]pyrene from polluted environments. Such micro-organisms synthesize monooxygenase and di-oxygenase enzymes that proceed with the aerobic or anaerobic catabolic degradations of benzo[a]pyrene. Bioaugmentation, biomineralization, and biostimulation methods can be used for the decontamina

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5

Moody, Joanna D., James P. Freeman, Peter P. Fu, and Carl E. Cerniglia. "Degradation of Benzo[a]pyrene by Mycobacterium vanbaalenii PYR-1." Applied and Environmental Microbiology 70, no. 1 (2004): 340–45. http://dx.doi.org/10.1128/aem.70.1.340-345.2004.

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ABSTRACT Metabolism of the environmental pollutant benzo[a]pyrene in the bacterium Mycobacterium vanbaalenii PYR-1 was examined. This organism initially oxidized benzo[a]pyrene with dioxygenases and monooxygenases at C-4,5, C-9,10, and C-11,12. The metabolites were separated by reversed-phase high-performance liquid chromatography (HPLC) and characterized by UV-visible, mass, nuclear magnetic resonance, and circular dichroism spectral analyses. The major intermediates of benzo[a]pyrene metabolism that had accumulated in the culture media after 96 h of incubation were cis-4,5-dihydro-4,5-dihydr

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6

Mai, Nguyen Thi Ngoc, Duong Quoc Hoan, Vu Thi Anh Tuyet, Tran Thi Thu Trang, Duong Khanh Linh, and Trinh Thi Huan. "An Effective Assembling of Novel Derivatives Containing Both Benzo[d]thiazole and Benzo[d]oxazole Rings." Letters in Organic Chemistry 17, no. 11 (2020): 815–22. http://dx.doi.org/10.2174/1570178617666200207104912.

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A novel series of 5-(benzo[d]thiazol-2-yl)benzo[d]oxazole-based compounds was synthesized in four linear steps in high yield from vanillin. Both benzo[d]thiazole and benzo[d]oxazole cyclizations were assisted with a domestic microwave oven in about 4-8 minutes in which the yield of the benzo[d]oxazole cyclization was up to 92%. Structures of the new synthesized compounds were elucidated by spectral data.

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7

Portilla, Jaime, Jairo Quiroga, Manuel Nogueras, et al. "Structural comparisons of isomeric series of 7-aryl-benzo[h]pyrazolo[3,4-b]quinolines and 11-aryl-benzo[f]pyrazolo[3,4-b]quinolines." Acta Crystallographica Section B Structural Science 64, no. 1 (2008): 72–83. http://dx.doi.org/10.1107/s0108768107065743.

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The structures of three new 7-aryl-benzo[h]pyrazolo[3,4-b]quinolines, 8-methyl-7-(4-chlorophenyl)-10-phenyl-6,10-dihydro-5H-benzo[h]pyrazolo[3,4-b]quinoline, C27H20ClN3, 8-methyl-7-(3-pyridinyl)-10-phenyl-6,10-dihydro-5H-benzo[b]pyrazolo[3,4-b]quinoline, C26H20N4, and 8-methyl-7-(4-pyridinyl)-10-phenyl-10H-benzo[h]pyrazolo[3,4-b]quinoline, C26H18N4, which is an unexpected oxidation product isolated from the attempted synthesis of 8-methyl-7-(4-pyridinyl)-10-phenyl-6,10-dihydro-5H-benzo[h]pyrazolo[3,4-b]quinoline, and those of three new 11-aryl-benzo[f]pyrazolo[3,4-b]quinolines, 11-(4-methylphe

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8

Šilhánková, Alexandra, Petr Trška, Daniela Vlková, and Miloslav Ferles. "Preparation of some derivatives of benzo[ij]quinolizine." Collection of Czechoslovak Chemical Communications 50, no. 5 (1985): 1048–56. http://dx.doi.org/10.1135/cccc19851048.

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Reaction of 1,2,3,4-tetrahydroquinoline with 1-chloro-2,3-epoxypropane afforded l-(3-chloro-2-hydroxypropyl)-l,2,3,4-tetrahydroquinoline (IIb) which was thermolabile and on heating in vacuo was converted into 2,3,6,7-tetrahydro-1H,5H-benzo[ij]quinolizin-2-ol (Ib). This compound reacted with acetic anhydride and p-toluenesulfonyl chloride to give 2-acetoxy-2,3,6,7-tetrahydro-1H,5H-benzo[ij]quinolizine (Ic) and 2-(p-toluenesulfonyloxy)-2,3,6,7-tetrahydro-1H,5H-benzo[ij]quinolizine (Id), respectively. N,N-Bis(3-chloro-2-hydroxypropyl)aniline (IIIb) on heating gave a mixture of cis- and trans-2,3,

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9

French, Jacqueline A. "Benzo versus Benzo: And the Winner Is…" Epilepsy Currents 11, no. 5 (2011): 143–44. http://dx.doi.org/10.5698/1535-7511-11.5.143.

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10

Mataka, Shuntaro, Takashi Irie, Youji Ikezaki, and Masashi Tashiro. "Preparation of Benzo-diimidazoles and Benzo-triimidazoles." Chemische Berichte 126, no. 8 (1993): 1819–22. http://dx.doi.org/10.1002/cber.19931260811.

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11

Mataka, Shuntaro, Yoshiharu Mitoma, Tsuyoshi Sawada, Thies Thiemann, Masahiko Taniguchi, and Masashi Tashiro. "Benzo[3.3]benzo[3.3]benzo- and naphtho[3.3]benzo[3.3]naphtho-orthocyclophane bis(alcohol)s. Preparations and structures." Tetrahedron 54, no. 20 (1998): 5171–86. http://dx.doi.org/10.1016/s0040-4020(98)00217-8.

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12

Li, Si, Zhao-Di Yang, Guiling Zhang, and Xiao Cheng Zeng. "Electronic and transport properties of porous graphene sheets and nanoribbons: benzo-CMPs and BN codoped derivatives." Journal of Materials Chemistry C 3, no. 37 (2015): 9637–49. http://dx.doi.org/10.1039/c5tc01954k.

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The electronic and electron transport properties of a series of 2D porous graphene sheets (n-benzo-CMPs) with different pore sizes n and their BN codoped derivatives, BN-n-benzo-CMPs, as well as 1D porous graphene nanoribbons (p-GNRs) tailored from n-benzo-CMPs and BN-n-benzo-CMPs are studied using DFT and NEGF methods.

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13

Vo-Dinh, T., T. Nolan, Y. F. Cheng, M. J. Sepaniak, and J. P. Alarie. "Phase-Resolved Fiber-Optics Fluoroimmunosensor." Applied Spectroscopy 44, no. 1 (1990): 128–32. http://dx.doi.org/10.1366/0003702904085859.

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This paper describes the development and application of a phase-resolved fiber-optics fluoroimmunosensor (PR-FIS), which combines the biochemical specificity of antigen-antibody reaction, the high sensitivity of laser excitation, the versatility of fiber-optics sensors, and the selectivity of phase-resolved detection. The PR-FIS device can differentiate benzo(a)pyrene and benzo(a)pyrene tetrol, a DNA-adduct product of the carcinogen benzo(a)pyrene. Benzo(a)pyrene tetrol can be detected at femtomole levels in the presence of an amount of interfacing benzo(a)pyrene that is 50-fold more concentra

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14

Babakov, V. N., N. Yu Rogovskaya, I. D. Kurdyukov, P. P. Beltyukov, S. A. Dulov, and A. S. Radilov. "EFFECT OF ARYL HYDROCARBON RECEPTOR AGONISTS AND LIPOPOLYSACCHARIDE ON BENZO(A)PYRENE GENOTOXICITY MARKERS." Toxicological Review, no. 3 (June 28, 2019): 19–25. http://dx.doi.org/10.36946/0869-7922-2019-3-19-25.

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The effect of aryl hydrocarbon receptor agonists (FICZ and ITE), as well as lipopolysaccharide under the toxic action of benzo(a)pyrene in HepaRG human hepatoma cells was evaluated. Active forms of the key stress-activated kinase cascades and DNA repair system proteins were used as markers of the genotoxic action of benzo(a)pyrene. A mixture of lipopolysaccharide with benzo(a)pyrene increases benzo(a)pyrene cytotoxicity and reduces the activation of DNA repair system proteins below the control level. Aryl hydrocarbon receptor agonists (FICZ and ITE) exhibit a cytoprotective effect against benz

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15

Babich, Harvey, Nieves Martin-Alguacil, and Ellen Borenfreund. "Use of the Rainbow Trout Hepatoma Cell Line, RTH-149, in a Cytotoxicity Assay." Alternatives to Laboratory Animals 17, no. 2 (1989): 67–71. http://dx.doi.org/10.1177/026119298901700203.

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The rainbow trout hepatoma cell line, RTH-149, was evaluated for use as a bioindicator cell type in the neutral red cytotoxicity assay. The cells were exposed for six days to various polycyclic aromatic hydrocarbons, including chemicals that are direct-acting toxicants and chemicals that require enzymatic biotransformation to cytotoxic metabolites. Whereas benzo[a]pyrene was only slightly cytotoxic, its metabolites — (±)trans-7,8-diol-benzo[a]pyrene and 3-hydroxy-benzo[a]pyrene — were highly cytotoxic. 7,12-Dimethylbenz[a]anthracene was cytotoxic, but cytotoxicity did not occur with benzo[a]an

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16

Jana, Umasish, Kartick Paul, Swapnadeep Jalal, Sandip Kundal, and Baitan Chakraborty. "Iron-Catalyzed Intramolecular Alkyne–Carbonyl Metathesis: A New Cyclization Strategy for the Synthesis of Benzocarbazole and Azepino[1,2-a]indole Derivatives." Synthesis 49, no. 18 (2017): 4205–12. http://dx.doi.org/10.1055/s-0036-1588472.

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An efficient synthesis of benzocarbazoles and benzo[3,4]azepino[1,2-a]indole derivatives through an FeCl3-catalyzed alkyne–aldehyde metathesis reaction is described. Structurally diverse benzo[a]carbazoles, benzo[c]carbazoles, and benzo[3,4]azepino[1,2-a]indoles have been achieved in good yields with high regio- and chemoselectivity in the presence of catalytic, inexpensive, and environmentally friendly FeCl3 as a catalyst.

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17

Dolgikh, O. V., N. A. Nikonoshina, V. B. Alekseev, and K. P. Luzhetsky. "Comparative assessment of immune profile in children under the influence of benz(a)pyrene and cold factor in a case-control study with modeling and verification of the results obtained in an in vivo experiment." YAKUT MEDICAL JOURNAL 88, no. 4 (2024): 63–67. https://doi.org/10.25789/ymj.2024.88.15.

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The comparative assessment of immune profile indicators in children under = benzo(a)pyrene and cold factor influence in a case-control study with the modeling and verification of obtained results in an in vivo experiment was performed. In the course of a case-control study in children under airborne benzo(a)pyrene exposure the signs of phagocytic leukocyte activity inhibition and specific haptenic hypersensitivity formation (IgG to benzo(a)pyrene) associated with blood contamination with benzo(a)pyrene were established. Revealed changes in the immune profile and xenobial biomedia composition i

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18

Kanaly, Robert A., Richard Bartha, Kazuya Watanabe, and Shigeaki Harayama. "Rapid Mineralization of Benzo[a]pyrene by a Microbial Consortium Growing on Diesel Fuel." Applied and Environmental Microbiology 66, no. 10 (2000): 4205–11. http://dx.doi.org/10.1128/aem.66.10.4205-4211.2000.

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ABSTRACT A microbial consortium which rapidly mineralized the environmentally persistent pollutant benzo[a]pyrene was recovered from soil. The consortium cometabolically converted [7-14C]benzo[a]pyrene to14CO2 when it was grown on diesel fuel, and the extent of benzo[a]pyrene mineralization was dependent on both diesel fuel and benzo[a]pyrene concentrations. Addition of diesel fuel at concentrations ranging from 0.007 to 0.2% (wt/vol) stimulated the mineralization of 10 mg of benzo[a]pyrene per liter 33 to 65% during a 2-week incubation period. When the benzo[a]pyrene concentration was 10 to 1

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19

Wu, Su Xi, Zhi Min Zhang, Rui Xing Liu, and Shan Shan Huang. "Effect of Production Process on Benzo (a) Pyrene Content in Camellia Oil." Advanced Materials Research 554-556 (July 2012): 1099–102. http://dx.doi.org/10.4028/www.scientific.net/amr.554-556.1099.

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In order to evaluate the effect of different production processes on benzo (a) pyrene content in camellia oil, a comparison in the amounts of benzo (a) pyrene had been made among the crude oils prepared by hot pressing, cold pressing, solvent extraction and aqueous enzymatic extraction. In conclusion, the benzo (a) pyrene content in aqueous enzymatic extracted camellia oil and cold pressing oil can meet the safety need without refining. The major cause of forming excessive benzo (a) pyrene in traditional solvent extracted oil is due to high temperature, rather than solvent. Neutralizing could

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20

Patel, Anil S., Hasmukh R. Khunt, Satish M. Ghelani, Jayesh S. Babariya, Kalpesh V. Vilapara, and Yogesh T. Naliapara. "Two Step One-Pot Synthesis of Novel 5-(4-Fluorophenyl)-1H-Beno[e][1,4]Diazepin-2(3H)-One and it’s Base Catalyzed Transformation to N-Alkyl and C-3 Arylidene Derivatives." International Letters of Chemistry, Physics and Astronomy 30 (March 2014): 106–15. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.30.106.

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We have demonstrated two step one-pot synthesis of novel 5-(4-Fluorophenyl)-1H-Beno[e][1,4]Diazepin-2(3H)-one using 2-Amino-4’-fluorobenzophenone as initial stating material. The small library of N-alkylation and C-3 benzylidene derivatives have been synthesized by base catalyzedreaction of 5-(4-fluorophenyl)-1H-benzo[e][1,4]diazepin-2(3H)-one (3) nucleus with various alkyl halides and aromatic aldehydes respectively.

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21

Patel, Anil S., Hasmukh R. Khunt, Satish M. Ghelani, Jayesh S. Babariya, Kalpesh V. Vilapara, and Yogesh T. Naliapara. "Two Step One-Pot Synthesis of Novel 5-(4-Fluorophenyl)-1<i>H</i>-Beno[e][1,4]Diazepin-2(3<i>H</i>)-One and it’s Base Catalyzed Transformation to <i>N</i>-Alkyl and C-3 Arylidene Derivatives." International Letters of Chemistry, Physics and Astronomy 30 (March 12, 2014): 106–15. http://dx.doi.org/10.56431/p-9l954w.

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We have demonstrated two step one-pot synthesis of novel 5-(4-Fluorophenyl)-1H-Beno[e][1,4]Diazepin-2(3H)-one using 2-Amino-4’-fluorobenzophenone as initial stating material. The small library of N-alkylation and C-3 benzylidene derivatives have been synthesized by base catalyzedreaction of 5-(4-fluorophenyl)-1H-benzo[e][1,4]diazepin-2(3H)-one (3) nucleus with various alkyl halides and aromatic aldehydes respectively.

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22

Mataka, Shuntaro, Yoshiharu Mitoma, Thies Thiemann, et al. "Bisacetals of aromatic ring-annelated . [3.3][3.3]Orthocyclophanes with triple-layered benzo/benzo/benzo- and naphtho/benzo/naphtho-system." Tetrahedron 53, no. 9 (1997): 3015–26. http://dx.doi.org/10.1016/s0040-4020(97)00042-2.

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23

Rykała, Wojciech, Monika J. Fabiańska, and Dominika Dąbrowska. "The Influence of a Fire at an Illegal Landfill in Southern Poland on the Formation of Toxic Compounds and Their Impact on the Natural Environment." International Journal of Environmental Research and Public Health 19, no. 20 (2022): 13613. http://dx.doi.org/10.3390/ijerph192013613.

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Landfill fires pose a real threat to the environment as they cause the migration of pollutants to the atmosphere and water sources. A greater risk is observed in the case of wild landfills, which do not have adequate isolation from the ground. The aim of this article is to present the results of studies on the toxicity of waste from a fire in a landfill in Trzebinia (southern Poland). Both soil and waste samples were investigated. The samples were analyzed using the GC-MS method and the leachates using ICP-OES. A total of 32 samples of incinerated waste and soil were collected. The organic com

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24

Arnould, J. P., A. Pfohl-Leszkowicz, V. Bach, J. P. Libert, and J. Belegaud. "Biological monitoring exposure of workers from plant producing carbon electrodes: quantification of benzo[a]pyrene DNA adducts in leukocytes, by a 32P-postlabelling method and an immunoassay." Human & Experimental Toxicology 18, no. 5 (1999): 314–21. http://dx.doi.org/10.1191/096032799678840174.

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The levels of benzo[a]pyrene were monitored for blood DNA-benzo[a]pyrene adducts in 17 workers from a plant producing carbon electrodes, with high exposure to benzo[a]pyrene (575-902-1149 ng m-3). Two different techniques, a 32P-postlabelling method and a competitive immunoassay using polyclonal antibodies obtained from rabbits immunised with DNA modified by benzo[a]pyrenetrans-7,8-dihydrodiol-9,10-epoxide were used. For each worker, urinary 1-hydroxypyrene, a potential indicator of exposure to polycyclic aromatic hydrocarbons, was measured. The effect of tobacco by urinary cotinine measuremen

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25

Kanaly, R. A., K. Watanabe, and S. Matsui. "Bioavailability of benzo[a]pyrene during NAPL-enhanced biodegradation in soil and in liquid culture." Water Science and Technology 53, no. 11 (2006): 17–25. http://dx.doi.org/10.2166/wst.2006.333.

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The high molecular weight polycyclic aromatic hydrocarbon (HMW PAH) benzo[a]pyrene is generally persistent in the environment and its persistence may be due to bioavailability limitations. However, the presence of degradation-capable microorganisms and a suitable cosubstrate are also necessary. This is especially the case for benzo[a]pyrene because it may only be degraded by fortuitous metabolism. Non-aqueous phase liquid (NAPL)-enhanced benzo[a]pyrene biodegradation and indicators of bioavailability were measured in soil and liquid culture. In soil, 14CO2 from 7-[14C]benzo[a]pyrene mineralisa

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26

Liu, Shenggui, Rongkai Pan, Guobi Li, Wenyi Su, and Chunlin Ni. "Synthesis of Ruthenium Complex Based on 2,6-Bis(1-(phenyl)-1H-benzo[d]imidazol-2-yl)pyridine and 2-(1-Phenyl-1H-benzo[d]imidazol-2-yl)benzoate and Catalytical Oxidation Property of 1-(1H-Benzo[d]imidazol-2-yl)ethanol to 1-(1H-Benzo[d]imidazol-2-yl)ethanone with H2O2." Journal of Chemistry 2017 (2017): 1–7. http://dx.doi.org/10.1155/2017/8647419.

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A new ruthenium complex, Ru(bpbp)(pbb)Cl, based on 2,6-bis(1-(phenyl)-1H-benzo[d]imidazol-2-yl)pyridine (bpbp) and 2-(1-phenyl-1H-benzo[d]imidazol-2-yl)benzoate (pbb) was synthesized. The complex Ru(bpbp)(pbb)Cl could catalytically oxidize 1-(1H-benzo[d]imidazol-2-yl)ethanol to 1-(1H-benzo[d]imidazol-2-yl)ethanone with H2O2 as oxidant. Influence of temperature and catalyst amount on the oxidation reaction was evaluated. The reaction optimal conditions are as follows: molar ratio of catalyst to substrate to H2O2 is 1 : 1000 : 3000, the proper reaction temperature is 50°C and reaction time lasts

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27

Han, Yunxia, Xueli Wang, Xiaoxiao He, Menghui Jia, Haifeng Pan, and Jinquan Chen. "Excited State Kinetics of Benzo[a]pyrene Is Affected by Oxygen and DNA." Molecules 28, no. 13 (2023): 5269. http://dx.doi.org/10.3390/molecules28135269.

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Benzo[a]pyrene is a widespread environmental pollutant and a strong carcinogen. It is important to understand its bio-toxicity and degradation mechanism. Herein, we studied the excited state dynamics of benzo[a]pyrene by using time-resolved fluorescence and transient absorption spectroscopic techniques. For the first time, it is identified that benzo[a]pyrene in its singlet excited state could react with oxygen, resulting in fluorescence quenching. Additionally, effective intersystem crossing can occur from its singlet state to the triplet state. Furthermore, the interaction between the excite

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28

Li, Yibiao, Liang Cheng, Xiaohang Liu, Bin Li, and Ning Sun. "Copper-promoted hydration and annulation of 2-fluorophenylacetylene derivatives: from alkynes to benzo[b]furans and benzo[b]thiophenes." Beilstein Journal of Organic Chemistry 10 (December 4, 2014): 2886–91. http://dx.doi.org/10.3762/bjoc.10.305.

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An efficient copper-promoted hydration reaction and its application in the synthesis of benzo[b]furan and benzo[b]thiophene derivatives is presented starting from readily available 2-fluorophenylacetylene derivatives. The key annulation step involves the hydration of the C–F bond of 2-fluorophenylacetylene derivatives followed by an intramolecular annulation to afford benzo[b]furan and benzo[b]thiophene derivatives. Moreover, structurally important 2,2'-bisbenzofuran scaffolds are provided in good yields.

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29

Kanaly, Robert A., Shigeaki Harayama, and Kazuya Watanabe. "Rhodanobacter sp. Strain BPC1 in a Benzo[a]pyrene-Mineralizing Bacterial Consortium." Applied and Environmental Microbiology 68, no. 12 (2002): 5826–33. http://dx.doi.org/10.1128/aem.68.12.5826-5833.2002.

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ABSTRACT A bacterial consortium which rapidly mineralizes benzo[a]pyrene when it is grown on a high-boiling-point diesel fuel distillate (HBD) was recovered from soil and maintained for approximately 3 years. Previous studies have shown that mobilization of benzo[a]pyrene into the supernatant liquid precedes mineralization of this compound (R. Kanaly, R. Bartha, K. Watanabe, and S. Harayama, Appl. Environ. Microbiol. 66:4205-4211, 2000). In the present study, we found that sterilized supernatant liquid filtrate (SSLF) obtained from the growing consortium stimulated mineralization of benzo[a]py

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30

Plant, A. L., D. M. Benson, and L. C. Smith. "Cellular uptake and intracellular localization of benzo(a)pyrene by digital fluorescence imaging microscopy." Journal of Cell Biology 100, no. 4 (1985): 1295–308. http://dx.doi.org/10.1083/jcb.100.4.1295.

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Uptake of benzo(a)pyrene by living cultured cells has been visualized in real time using digital fluorescence-imaging microscopy. Benzo(a)pyrene was noncovalently associated with lipoproteins, as a physiologic mode of presentation of the carcinogen to cells. When incubated with either human fibroblasts or murine P388D1 macrophages, benzo(a)pyrene uptake occurred in the absence of endocytosis, with a halftime of approximately 2 min, irrespective of the identity of the delivery vehicles, which were high density lipoproteins, low density lipoproteins, very low density lipoproteins, and 1-palmitoy

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31

BHASKAR, J. UDAYA, G. SRINIVASA RAO, B. PULLA RAO, PRANAB CHATTERJEE, D. K. SAHOO, and S. SRINIVASA RAO. "Design, Synthesis, Structural Characterization and Antimicrobial Screening of Several Novel Benzothiophene Linked Thiazolidines." Asian Journal of Chemistry 35, no. 9 (2023): 2176–80. http://dx.doi.org/10.14233/ajchem.2023.27958.

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A novel sequence of (19E)-(3-(benzo[b]thiophen-3-yl)-N′-((Z)-5-benzyliden-4-oxo-3-phenyl thiazolidin-2-ylidene)propanehydrazides (6a-f) was synthesized in moderate to good yields from the final intermediate, (E)-(3-(benzo[b]thiophen-3-yl)-N′-(4-oxo-3-phenylthiazolidin- 2-ylidene)propane hydrazide (5). In present work, 3-(benzo[b]thiophen-3-yl)propanoic acid (1) was selected as raw material and compounds such as 1-(benzo[b]thiophen-3-yl)pentan-3-one (2), 3-(benzo[b]thiophen-3-yl)propanehydrazide (3) and 1-(3-(benzo[b]- thiophen-3-yl)-propanoyl)-4-phenylsemicarbazide (4) were materialized as int

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32

Duc, Dau Xuan. "Recent Achievement in the Synthesis of Benzo[b]furans." Current Organic Synthesis 17, no. 7 (2020): 498–517. http://dx.doi.org/10.2174/1570179417666200625212639.

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Background: Benzo[b]furan derivatives are oxygen-containing heterocyclic compounds consisting of fused benzene and furan rings and are present in a large number of natural and non-natural compounds. This class of compounds has a wide spectrum of biological activities, such as antiarrhythmic, anticancer, inflammatory, antioxidant, antimicrobial, and antiviral. Furthermore, benzo[b]furan derivatives have also been applied in various areas, such as organic electroluminescence device materials and organic dyes, photosensitizing material, organic synthesis as building blocks or intermediates. : Bec

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Tucker, Sheryl A., and William E. Acree. "Excitation versus Emission Spectra as a Means to Examine Selective Fluorescence Quenching Agents." Applied Spectroscopy 46, no. 9 (1992): 1388–92. http://dx.doi.org/10.1366/0003702924123755.

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To ascertain whether fluorescence quenching is best studied with the use of excitation or emission spectra, and to expand our existing PAH spectral data file, we have recorded excitation spectra of benzo[b]perylene, dibenzo[hi,wx]heptacene, tetrabenzo[de,hi,mn,qr]naphthacene, perylene, benzo[a]fluoranthene, benzo[def]indeno[1,2,3hi]chrysene, naphtho[2,1a]fluoranthene, naphtho[2,3b]fluoranthene, benzo[k]fluoranthene, 2-azapyrene, naphtho[8,1,2hij]pyreno[9,10,1def]phthalazine, indeno[1,-2,3ij]isoquinoline, benzo(lmn][3,8]phenanthroline, and 7-methyldibenzo(b,def]chrysene at various nitromethane

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Feng, Gaofeng, Jing-Yao He, Qi-Fan Bai, and Chengan Jin. "Organic Photoredox Catalysis for Pschorr Reaction: A Metal-Free and Mild Approach to 6H-Benzo[c]chromenes." Synlett 29, no. 17 (2018): 2311–15. http://dx.doi.org/10.1055/s-0037-1610279.

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An expedient organic photoredox Pschorr reaction has been developed that opens up a synthetic route to 6H-benzo[c]chromenes. The process can be performed under mild conditions by using eosin Y as a photoredox catalyst and acetonitrile as the solvent. The diazonium salts can be either preformed or generated in situ from the corresponding amines with t-BuONO. The process is amenable to gram-sale synthesis of 6H-benzo[c]chromenes, which can be further transformed into both 6H-benzo[c]chromen-6-ones through oxidation or to 6H-benzo[c]chromen-6-amine through sp3 C–H bond amination. The protocol pro

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Edward. "PENGAMATAN KADAR SENYAWA POLISIKLIK AROMATIK HIDROKARBON (PAH): BENZO (a) PYRENE, BENZO (a) ANTHRACENE, BENZO (b) FLUORANTHENE, DI-BENZO (a,h) ANTHRACENE, DAN BENZO (g,h,i) PERYLENE DALAM AIR LAUT DI TELUK JAKARTA." Pro-Life 8, no. 1 (2021): 82–98. https://doi.org/10.33541/pro-life.v8i1.2786.

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Measurement of the concentration of polycyclic aromatic hydrocarbons (PAHs) compounds Benzo(a) Pyrene, Benzo(a)Anthracene, Benzo(b)Fluoranthene, Di-benzo(a,h)Anthracene, and Benzo(g,h,i) Perylene in seawater in Jakarta Bay was conducted in July-August 2015. The purpose of this study is to determine the level of pollution of five PAH compounds in seawater in their relation to the protection of marine organisms. Seawater samples were taken by using a water sampler at 23 research stations. The station position is determined by using the Geographical Position System (GPS). All samples were analyze

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Uma, Pathki, Kamatala Rajanna, Yelike Sriram, Akarapu Premalatha, and Pondichery Saipraksh. "Synthesis of 3-(4-(Benzo[d]thiazol-2-yl)phenyl)-5-aryl-1,3,5-oxadiazinane-4-thiones and 1-(4-(Benzo[d]thiazol-2-yl)phenyl)-5-methyl-3-aryl-1,3,5-triazinane-2-thiones." SynOpen 02, no. 01 (2018): 0030–35. http://dx.doi.org/10.1055/s-0036-1591917.

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In this investigation 4-(benzo[d]thiazol-2-yl)benzenamine was reacted with aryl isothiocyanates to give 1-(4-(benzo[d]thiazol-2-yl)phenyl)-3-aryl thioureas 2, which were cyclized with acid to afford 3-(4-(benzo[d]thiazol-2-yl)phenyl)-5-aryl-1,3,5-oxadiazinane-4-thiones 3. On the other hand, 1-(4-(benzo[d]thiazol-2-yl)phenyl)-5-methyl-3-aryl-1,3,5-triazinane-2-thiones 4 were obtained when compounds 2 were treated with amines.

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SAEKI, Ken-ichi, Masato TOMOMITSU, Yutaka KAWAZOE, Kunitaka MOMOTA, and Hiroshi KIMOTO. "Fluorinated Benzo(h)quinolines and Benzo(f)quinolines." CHEMICAL & PHARMACEUTICAL BULLETIN 44, no. 12 (1996): 2254–58. http://dx.doi.org/10.1248/cpb.44.2254.

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Eiroa, Áurea Andrade, Esther Vázquez Blanco, Purificación López Mahía, Soledad Muniategui Lorenzo, Darío Prada Rodríguez, and Esther Fernández Fernández. "Error Propagation as a Factor in Selection of Measurement Intervals for the Determination of Polycyclic Aromatic Hydrocarbons by Second-Derivative Spectrofluorimetry." Journal of AOAC INTERNATIONAL 83, no. 4 (2000): 977–84. http://dx.doi.org/10.1093/jaoac/83.4.977.

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Abstract The most suitable wavelength intervals were selected for the determination of 4 polycyclic aromatic hydrocarbons (PAHs; benzo[g,h,i]perylene, dibenzo[a,h]anthracene, pyrene, and triphenylene) in very complex mixtures of 11 PAHs: anthracene, benz[a]anthracene, benzo[a]pyrene, benzo[b]fluoranthene, benzo[g,h,i]perylene, benzo[k]fluoranthene, chrysene, dibenz[a,h]anthracene, phenanthrene, pyrene, and triphenylene. The multiple linear regression algorithm was applied to measurements made in several wavelength intervals previously selected on the basis of sensitivity and minimum number of

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Viezzer, Cristina, Roberto Revoltella, and Lucia Celotti. "The Capacity of Murine Epithelial Cell Lines with Different Degrees of Malignant Transformation to Metabolise Benzo[a]pyrene." Alternatives to Laboratory Animals 24, no. 4 (1996): 541–46. http://dx.doi.org/10.1177/026119299602400413.

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Cultures of three murine cell lines derived from fetal mouse liver (FL, FLT3 and FLT5) were treated with benzo[a]pyrene to evaluate their ability to activate promutagens. DNA adducts were detected in all three cell lines when they were treated with the major active metabolite of benzo[a]pyrene, benzo[a]pyrene diolepoxide. DNA adducts were also produced in FL and FLT3 cells when they were treated with the promutagen, benzo[a]pyrene, while treatment of FLT5 cells resulted in very few DNA adducts. In treated FL and FLT3 cells, the most evident adduct spot detected showed a chromatographic positio

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Markosyan, A. I., A. S. Ayvazyan, S. H. Gabrielyan, S. S. Mamyan, A. A. Ayvazyan, and H. H. Arakelyan. "Synthesis, some transformations and antibacterial activity of 5<i>H</i>-spiro[benzo[<i>h</i>][1,2,4]triazolo[3,4-<i>b</i>]quinazoline6,1′-cycloheptane]-7(11<i>H</i>)-ones." Журнал общей химии 93, no. 3 (2023): 363–73. http://dx.doi.org/10.31857/s0044460x23030046.

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Condensation of 2-thioxo-2,3-dihydro-1 H -spiro[benzo[ h ]quinazoline-5,1′-cycloheptane]-4(6 H )-one with hydrazine hydrate afforded 2-hydrazinyl-3 H -spiro[benzo[ h ]quinazoline-5,1′-cycloheptane]-4(6 H )-one. The reaction of the latter with orthoformic acid ethyl ester or carbon disulfide yielded 5 H -spiro[benzo[ h ][1,2,4]triazolo[3,4- b ]quinazoline-6,1′-cycloheptane]-7(11 H )-one and 9-mercapto-5 H -spiro[benzo[ h ][1,2,4]triazolo[3,4- b ] quinazoline-6,1 ‘-cycloheptane]-7(11 H )-one, respectively. Alkylation of the latter with methyl and ethyl iodides, allyl bromide, and benzyl chloride

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Nikonoshina, Natalya A., and Oleg V. Dolgikh. "CYP1A1 (RS4646421) gene polymorphism and peculiarities of immune profile in children under aerogenic exposure to benzo(a)pyrene." Hygiene and sanitation 102, no. 11 (2023): 1204–9. http://dx.doi.org/10.47470/0016-9900-2023-102-11-1204-1209.

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Introduction. The benzo(a)pyrene exposure forms the special phenotype of the immune profile in children. The study of immune system features associated with the polymorphism of detoxification genes is relevant in the conditions of health risks linked with environmental pollution. Materials and methods. There was performed clinical and laboratory examination of four hundred seventy nine children aged of 3–6 years. The observation group consisted of 308 children living in conditions of aerogenic exposure to benzo(a)pyrene. The comparison group included 171 children from a relatively clean

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He, Yongli, Dan Yuan, Ke Yang, and Bindong Li. "Recent Advances in the Synthesis of Benzo[d]isothiazol-3(2H)-One and Benzo[e][1,3]Thiazin-4-One Derivatives." Molecules 30, no. 10 (2025): 2099. https://doi.org/10.3390/molecules30102099.

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Benzo[d]isothiazol-3(2H)-one and benzo[e][1,3]thiazin-4-one derivatives, as significant sulfur- and nitrogen-containing heterocyclic compounds, are prevalent in natural products, pharmaceuticals, and food items. In recent years, a variety of innovative synthetic methodologies for these compounds have been developed. In this review, we will comprehensively introduce the major advances in the synthesis of benzo[d]isothiazol-3(2H)-one and benzo[e][1,3]thiazin-4-one derivatives via both intramolecular and intermolecular pathways from 2012 to the present.

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43

Ina, Yessy Tamu, and Iven Patu Sirappa. "PEMANFAATAN CAIR TEMPURUNG KELAPA DAN PENGARUHNYA TERHADAP ORGANOLEPTIK DAN KIMIAWI DAGING SAPI." Jurnal Peternakan Nusantara 7, no. 1 (2021): 41. http://dx.doi.org/10.30997/jpn.v7i1.4075.

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Penelitian ini bertujuan untuk mendapatkan konsentasi asap cair terbaik sebagai bahan pembuat dendeng sapi dengan menganalisis kadar fenol, kadar protein, Benzo (a) pirene, Benzo (a) anttracena dan organoleptik pada dendeng sapi. Penelitian ini menggunakan menggunakan Rancangan Acak Lengkap yaitu perendaman daging dengan konsentrasi asap cair yang berbeda. Penggunaan asap cair tempurung kelapa mempunyai 3 taraf konsentrasi pengasapan yaitu P1=3%, P2=6%, dan P3=9%. Kebutuhan untuk perendaman daging dengan menggunakan asap cair adalah 15 sampel. Variabel yang diukur adalah kadar fenol, kadar pro

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Belykh, L. I., and N. Yu Poley. "Monitoring and assessment of the effect of benzo (a) pyrene for coniferous and deciduous plants in anthropogenically polluted areas." XXI Century. Technosphere Safety 6, no. 3 (2021): 240–50. http://dx.doi.org/10.21285/2500-1582-2021-3-240-250.

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Benzo (a) pyrene content in plants and soils in anthropogenically polluted areas pollution was monitored. The influence of benzo (a) pyrene on conifers and deciduous plants was assessed. In forests with Scots pine (Pinus sylvestris L.) and silver birch (Betula pendula) trunks, the content of lignin, cellulose, and extractive low molecular weight polar substances was determined by the concentration of benzo (a) pyrene and tree species. In forest ecosystems, the background content of carcinogen (1–5 μg / kg) did not affect the content of lignin and cellulose, but stimulated the synthesis of extr

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Acosta Quintero, Lina M., Isidro Burgos, Alirio Palma, Justo Cobo, and Christopher Glidewell. "A concise, efficient and versatile synthesis of amino-substituted benzo[b]pyrimido[5,4-f]azepines: synthesis and spectroscopic characterization, together with the molecular and supramolecular structures of three products and one intermediate." Acta Crystallographica Section C Structural Chemistry 74, no. 3 (2018): 312–20. http://dx.doi.org/10.1107/s2053229618002176.

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A concise, efficient and versatile synthesis of amino-substituted benzo[b]pyrimido[5,4-f]azepines is described: starting from a 5-allyl-4,6-dichloropyrimidine, the synthesis involves base-catalysed aminolysis followed by intramolecular Friedel–Crafts cyclization. Four new amino-substituted benzo[b]pyrimido[5,4-f]azepines are reported, and all the products and reaction intermediates have been fully characterized by IR,1H and13C NMR spectroscopy and mass spectrometry, and the molecular and supramolecular structures of three products and one intermediate have been determined. In each ofN,2,6,11-t

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Okeoma-Franklin, A. F. Ogbonna P. C. and Okeoma T. F. "Assessment of Polycyclic Aromatic Hydrocarbons contents in Water and Sediment Samples in selected Streams in Ikwuano Local Government, Abia State, Nigeria." Journal of Energy Technology and Environment 6, no. 3 (2024): 137–46. https://doi.org/10.5281/zenodo.13771105.

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<em>Safe drinking water is fundamental to human health. The aim of this study was to assess the Polycyclic Aromatic Hydrocarbon (PAH) contents of water and sediments in selected streams in Ikwuano local government, Abia state. Experimental study design was used for this work. Water and sediment samples were collected from four different locations for PAH analysis. PAH analysis were conducted using various recommended routine laboratory techniques. Result shows that all the PAH concentration in stream water exhibited a significant difference (p<0.05) between the four sampling stations and th

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Zachara, Alicja, Dorota Gałkowska, and Lesław Juszczak. "Występowanie wielopierścieniowych węglowodorów aromatycznych w wybranych produktach zbożowych." Zywnosc Nauka Technologia Jakosc/Food Science Technology Quality 111, no. 2 (2017): 67–77. http://dx.doi.org/10.15193/zntj/2017/111/186.

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W pracy przedstawiono wyniki badań, których celem było określenie poziomu zanieczyszczenia różnych rodzajów produktów zbożowych związkami z grupy wielopierścieniowych węglowodorów aromatycznych (WWA), tj. benzo(a)pirenem oraz sumą benzo(a)pirenu, benzo(a)antracenu, benzo(b)fluorantenu i chryzenu. Zawartość tych związków w produktach przeznaczonych dla niemowląt i małych dzieci jest limitowana przez Rozporządzenie Komisji (UE) 2015/1125. Materiał badany stanowiły dostępne handlowo płatki zbożowe, kasze, chleby, pieczywo chrupkie oraz musli, a także produkty dla niemowląt i dzieci: kaszki zbożow

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FONTCUBERTA, M., J. F. ARQUÉS, M. MARTÍNEZ, et al. "Polycyclic Aromatic Hydrocarbons in Food Samples Collected in Barcelona, Spain." Journal of Food Protection 69, no. 8 (2006): 2024–28. http://dx.doi.org/10.4315/0362-028x-69.8.2024.

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This study reports on the concentrations of eight polycyclic aromatic hydrocarbons (PAHs) in food samples collected in the city of Barcelona (Catalonia, Spain) from 2003 to 2004. Food samples included meat products, fish (fresh and smoked), other seafood (cephalopods, crustaceans, and bivalves), vegetable oil, and tea. Concentrations of benz[a]anthracene, benzo[b]fluoranthene, benzo[k]fluoranthene, benzo[g,h,i]perylene, benzo[α]pyrene, benzo[e]pyrene, dibenz[a,h]anthracene, and indeno[1,2,3-c,d]pyrene were determined by reversed-phase high-performance liquid chromatography with fluorescence de

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Niewiadowska, Alicja, Tomasz Kiljanek, Stanisław Semeniuk, Krzysztof Niemczuk, and Jan Żmudzki. "Polycyclic aromatic hydrocarbons (PAHs) in smoked meat and fish." Medycyna Weterynaryjna 72, no. 6 (2016): 383–88. http://dx.doi.org/10.21521/mw.5516.

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The aim of the study was to assess the occurrence and to determine the concentrations of polycyclic aromatic hydrocarbons (PAHs) in traditionally smoked meat and fish products of domestic production in relation to the amendment in the EU legislation. The determinations of benzo(a)pyrene (BaP), benzo(a)anthracene, benzo(b)fluoranthene, and chrysene were carried out in 286 meat product samples, which included 161 sausage samples and 125 samples of other smoked meats (ham, loins, bacon, etc.) as well as 17 fish samples, using gas chromatography coupled with mass spectrometry (GC-MS/MS). The highe

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Jeeno, Peerapong, Sumed Yadoung, Marninphan Thongkham, et al. "In-House Immunoglobulin Y-Based Immunoassay for Detecting Benzo[a]pyrene in Grilled Pork Samples." Biosensors 14, no. 12 (2024): 588. https://doi.org/10.3390/bios14120588.

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Benzo[a]pyrene (B[a]P) is a hazardous polycyclic aromatic hydrocarbon that accumulates in several environmental matrices as a result of incomplete combustion. Its presence, carcinogenic properties, and tendency for bioaccumulation provide significant risks to human health and the environment. The objective of this study is to create an immunoassay for the detection of benzo[a]pyrene utilizing immunoglobulin Y antibodies. An indirect competitive enzyme-linked immunosorbent assay (ic-ELISA) was utilized to develop a speedy, straightforward, sensitive, and economical approach for detecting B[a]P

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