Novel thiosemicarbazide derivatives with 4-nitrophenyl group as multi-target drugs: α-glucosidase inhibitors with antibacterial and antiproliferative activity
A series of thiosemicarbazides with 4-nitrophenyl group was obtained in the reaction of carboxylic acid hydrazides with isothiocyanates. All compounds were checked for their antibacterial and antiproliferative activity. Our results have shown that derivatives possessed antibacterial activity against , , and , moderate cytotoxicity and good therapeutic safety . Additionally, compounds and significantly
1,3,4-Thiadiazole Derivatives. Synthesis, Structure Elucidation, and Structure−Antituberculosis Activity Relationship Investigation
作者:Elçin E. Oruç、Sevim Rollas、Fatma Kandemirli、Nathaly Shvets、Anatholy S. Dimoglo
DOI:10.1021/jm0495632
日期:2004.12.1
A series of 2,5-disubstituted-1,3,4-thiadiazoles were synthesized, the compounds structures were elucidated and screened for the antituberculosis activity against Mycobacterium tuberculosis H37Rv using the BACTEC 460 radiometric system. Among the tested compounds, 2-phenylamino-5-(4-fluorophenyl)-1,3,4-thiadiazole 22 showed the highest inhibitory activity. The relationships between the structures of compounds and their antituberculosis activity were investigated by the Electronic-Topological Method (ETM) and feed forward neural networks (FFNNs) trained with the back-propagation algorithm. As a result of the approach, a system of pharmacophores and anti-pharmacophores has been found that effectively separates compounds of the examination set into groups of active and inactive compounds. The system can be applied to the screening and design of new active compounds possessing skeletons similar to those used in the present study.
Synthesis and antitumor activity of 4-cyclohexyl/aryl-5-(pyridin-4-yl)-2,4-dihydro-3H-1,2,4-triazole-3-thiones
作者:Mashooq Ahmad Bhat、Mohamed A. Al-Omar、Ahmed M. Naglah、Mohamed M. Abdulla、Hoong-Kun Fun
DOI:10.1007/s00044-014-1216-5
日期:2015.4
The reaction of 2-isonicotinoyl-N-cyclohexyl/arylhydrazinecarbothioamide (2a-r) with sodium hydroxide, in each case, a single product was obtained. The structures of the compounds were confirmed on the basis of their elemental analysis and spectral data. The single crystal X-ray analysis confirmed the structure of these products as N-4-cyclohexyl/aryl-5-(pyridine-4-yl)-2,4-dihydro-3H-1,2,4-triazole-3-thiones (3a-r). The in vitro antitumor activity of compounds was screened against three cell lines; BEL-7402, HUH-7 and HepG2 human hepatoma using MTT assay. Sorafenib (50 A mu M) was used as a positive control. The results of the MTT-dye reduction assay indicated that most of the compounds exert potent cytotoxic/antiproliferative effect in a time and dose-dependent manner via induced apoptosis of HepG2 cells. Results also showed that the tested compounds could significantly enhance the activity of caspase-3 which plays a very important role as the central effecter during apoptosis. The effect of different substitutions on the aromatic portion on the activity was found to be in the following order CH3 > OCH3 > I > SO2NH2 > OC2H5 > C2H5 > NO2 > Cl > CH3CONH.
Synthesis and anti-Candidal activity of N-(4-aryl/cyclohexyl)-2-(pyridine-4-yl carbonyl) hydrazinecarbothioamide
作者:Mashooq Ahmad Bhat、Abdul Arif Khan、Shahanavaj Khan、Mohamed A. Al-Omar、Mohammad Khalid Parvez、Mohammed Salem Al-Dosari、Abdullah Al-Dhfyan
DOI:10.1016/j.bmcl.2014.01.060
日期:2014.3
Eighteen N-(4-aryl/cyclohexyl)-2-(pyridine-4-yl carbonyl) hydrazinecarbothioamide derivatives were synthesized, evaluated against ten clinical isolates of Candida spp. and compared with itraconazole. Introduction of p-chloro (2c), p-iodo (2q), m-chloro (2l) and o-nitro (2r) substitution at phenyl ring of thiosemicarbazide enhanced the anti-Candida activity. Compound (2c) bearing p-cholorophenyl ring was found to be the most effective against Candida albicans ATCC 66027, Candida spp. 12810 (blood) and Candida spp. 178 (HVS) with MIC value of 0.09-0.78 mu g/mL, whereas itraconazole exhibits the inhibitory activity with MIC value of 0.04-1.56 mu g/mL against all tested strains. There is a correlation between anti-Candidal activity and p-chloro substitution at phenyl ring of thiosemicarbazide. All synthesized compounds were investigated for their potential cytotoxicity against non cancer cell line MCF-10A. The active compounds 2c, 2r and 2a were further investigated for their cytotoxic effects on three cancer cell lines; HT1080 (skin), HepG2 (liver) and A549 (lung). The active compounds showed minimal cytotoxic activity against non cancer cell line and all three cancer cell lines. Moreover, compound 2c displaying better activity against C. albicans ATCC66027 and Candida spp. [blood] compared to reference drug (itraconazole), represents a good lead for the development of newer, potent and broad spectrum anti-Candidal agents. (C) 2014 Elsevier Ltd. All rights reserved.
ZHANG, ZIYI;YANG, KEXIN;ZENG, FULI, CHEM. J. CHIN. UNIV., 9,(1988) N 3, 239-245