Synthesis of novel 1,3,4-trisubstituted pyrazoles as anti-inflammatory and analgesic agents
作者:Fatma A. Ragab、Nagwa M. Abdel Gawad、Hanan H. Georgey、Mona F. Said
DOI:10.1016/j.ejmech.2013.03.005
日期:2013.5
Some novel 1,3,4-trisubstituted pyrazoles were synthesized and screened for their anti-inflammatory and analgesic activities as well as their ulcerogenic liability. They showed anti-inflammatory and analgesic activities with better GIT tolerance than the standard drug phenylbutazone. In addition, IC50 values for 5e and 8e were recorded. Compound 5e was found to be the most active one as anti-inflammatory
Pyrazolylbenzo[ d ]imidazoles as new potent and selective inhibitors of carbonic anhydrase isoforms hCA IX and XII
作者:Satish Kumar、Mariangela Ceruso、Tiziano Tuccinardi、Claudiu T. Supuran、Pawan K. Sharma
DOI:10.1016/j.bmc.2016.04.061
日期:2016.7
were designed, synthesized and evaluated against four humancarbonicanhydrase isoforms belonging to α family comprising of two cytosolic isoforms hCA I and II as well as two transmembrane tumor associated isoforms hCA IX and XII. Starting from these derivatives that showed high potency but low selectivity in favor of tumor associated isoforms hCA IX and XII, we investigated the impact of removing the
作者:Rehab F. Ahmed、Walaa R. Mahmoud、Nagwa M. Abdelgawad、Marwa A. Fouad、Mona F. Said
DOI:10.1016/j.ejmech.2023.115805
日期:2023.12
variable groups like sulphamoyl group as in compounds 4a-e, its bioisosteric carboxylic acid as in compounds 5a-e and 8e, ethyl carboxylate ester as in compounds 6a-e and 9a-e, which were designed as potential prodrugs, isothiazole ring as in compound 7, hydrazide derivative 10e, hydroxamic acid derivatives 11a-e and semicarbazide derivatives 12a-c,e. All the synthesized compounds were investigated for
本研究旨在设计基于吡唑苯磺酰胺核心的有效碳酸酐酶抑制剂(CAI)。合成了九个系列的取代吡唑苯磺酰胺化合物,其具有可变基团,如化合物4a-e中的氨磺酰基、化合物5a-e和8e中的生物等排羧酸、化合物6a-e和 9a-e中的羧酸乙酯,其中被设计为潜在的前药,化合物7中的异噻唑环、酰肼衍生物10e 、异羟肟酸衍生物11a-e和氨基脲衍生物12a-c,e 。研究了所有合成的化合物对两种人 CA 异构体 hCA IX 和 hCA XII 的碳酸酐酶 (CA) 抑制活性,并与乙酰唑胺(AAZ) 进行比较。此外,还根据美国 NCI 方案评估了这些化合物对 60 种癌细胞系的抗癌活性。 化合物4b 、 5b 、 5d 、 5e 、 6b 、 9b 、 9e和11b显示出对 hCA IX 和 hCA XII 两种亚型的显着抑制活性,而6e 、 9d 、 11d和11e仅与乙酰唑胺相比显示出对 hCA XII
Synthesis and biological evaluation of some 4-functionalized-pyrazoles as antimicrobial agents
作者:Pawan K. Sharma、Navneet Chandak、Pawan Kumar、Chetan Sharma、Kamal R. Aneja
DOI:10.1016/j.ejmech.2011.01.060
日期:2011.4
1,3-Diaryl-4-formylpyrazoles 8 bearing benzenesulfonamide moiety at position-1 were synthesized as important intermediates following Vilsmeier-Haack strategy. Aldehyde moiety of 4-formylpyrazole was then converted into carboxylic acid 9, cyano 10 and carbothioamide 11 using established procedures. Out of these 4-functionalized pyrazoles, pyrazole-4-carboxylic acids 9 and carbothioamides 11 were evaluated for their in vitro antibacterial activity against four pathogenic bacterial strains namely, Staphylococcus aureus, Bacillus subtilis (Gram-positive), Escherichia coli, Pseudomonas aeruginosa (Gram-negative), and in vitro antifungal activity against two pathogenic fungal strains namely, Aspergillus niger and Aspergillus flavus. Three tested compounds, 9e, 11b and 11f exhibited moderate antibacterial activity against Gram-positive bacteria and 9g showed moderate antifungal activity against the tested fungi. However, none of the compounds showed any activity against Gram-negative bacteria. (c) 2011 Elsevier Masson SAS. All rights reserved.
Synthesis of 4-(2-substituted hydrazinyl)benzenesulfonamides and their carbonic anhydrase inhibitory effects
In this study, 4-(2-substituted hydrazinyl)benzenesulfonamides were synthesized by microwave irradiation and their chemical structures were confirmed by H-1 NMR, (CNMR)-C-13, and HRMS. Ketones used were: Acetophenone (S1), 4-methylacetophenone (S2), 4-chloroacetophenone (S3), 4-fluoroacetophenone (S4), 4-bromoacetophenone (S5), 4-methoxyacetophenone (S6), 4-nitroacetophenone (S7), 2-acetylthiophene (S8), 2-acetylfuran (S9), 1-indanone (S10), 2-indanone (S11). The compounds S9, S10 and S11 were reported for the first time, while S1-S8 was synthesized by different method than literature reported using microwave irradiation method instead of conventional heating in this study. The inhibitory effects of 4-(2-substituted hydrazinyl) benzenesulfonamide derivatives (S1-S11) against hCA I and II were studied. Cytosolic hCA I and II isoenzymes were potently inhibited by new synthesized sulphonamide derivatives with K-is in the range of 1.79 +/- 0.22-2.73 +/- 0.08 nM against hCA I and in the range of 1.72 +/- 0.58-11.64 +/- 5.21nM against hCA II, respectively.