6-Nitrobenzimidazole derivatives (1-30) synthesized and their phosphodiesterase inhibitory activities determined. Out of thirty tested compounds, ten showed a varying degrees of phosphodiesterase inhibition with IC50 values between 1.5 +/- 0.043 and 294.0 +/- 16.7 mu M. Compounds 30 (IC50 = 1.5 +/- 0.043 mu M), 1 (IC50 = 2.4 +/- 0.049 mu M), 11 (IC50 = 5.7 +/- 0.113 mu M), 13 (IC50 = 6.4 +/- 0.148 mu M), 14 (IC50 = 10.5 +/- 0.51 mu M), 9 (IC50 = 11.49 +/- 0.08 mu M), 3 (IC50 = 63.1 +/- 1.48 mu M), 10 (IC50 = 120.0 +/- 4.47 mu M), and 6 (IC50 = 153.2 +/- 5.6 mu M) showed excellent phosphodiesterase inhibitory activity, much superior to the standard EDTA (IC50 = 274 +/- 0.007 mu M), and thus are potential molecules for the development of a new class of phosphodiesterase inhibitors. Astructure-activity relationship is evaluated. All compounds are characterized by spectroscopic parameters (C) 2011 Elsevier Ltd. All rights reserved.
One-Pot Synthesis of Benzimidazoles in Water in the Presence of SiO2–OPO3H
作者:B. F. Mirjalili、A. Bamoniri、M. Rahimi Kazerouni
DOI:10.1007/s10593-014-1445-z
日期:2014.4
Silica-bound phosphoric acid (SiO2-OPO3H), as an eco-friendly, reusable, and heterogeneous catalyst, was applied for synthesis of 2-substituted benzimidazoles in water at 70A degrees C. Very short reaction times, clean work-up, and high yields are among the advantages of this protocol.
Rao; Ratnam, Proceedings - Indian Academy of Sciences, Section A, 1959, # 49, p. 193,195, 196
作者:Rao、Ratnam
DOI:——
日期:——
Design, synthesis, bio-evaluation, and <i>in silico</i> studies of some N-substituted 6-(chloro/nitro)-1<i>H</i>-benzimidazole derivatives as antimicrobial and anticancer agents
作者:Em Canh Pham、Tuong Vi Thi Le、Tuyen Ngoc Truong
DOI:10.1039/d2ra03491c
日期:——
A new series of 6-substituted 1H-benzimidazole derivatives were synthesized by reacting various substituted aromatic aldehydes with 4-nitro-o-phenylenediamine and 4-chloro-o-phenylenediamine through condensation using sodium metabisulfite as the oxidative reagent. The N-substituted 6-(chloro/nitro)-1H-benzimidazole derivatives were prepared from the 6-substituted 1H-benzimidazole derivatives and substituted
以焦亚硫酸钠为氧化试剂,将各种取代芳香醛与4-硝基邻苯二胺、4-氯邻苯二胺进行缩合反应,合成了一系列新的6-取代1H-苯并咪唑衍生物。 N-取代的6-(氯/硝基)-1H-苯并咪唑衍生物由6-取代的1H-苯并咪唑衍生物和取代的卤化物使用碳酸钾通过常规方法以及通过暴露于微波辐射来制备。采用微波辅助方法合成了 76 种 1 H -苯并咪唑衍生物,产率中等至优异(40% 至 99%)。化合物1d 、 2d 、 3s 、 4b和4k对大肠杆菌、粪链球菌、MSSA(甲氧西林敏感金黄色葡萄球菌菌株)和 MRSA(耐甲氧西林金黄色葡萄球菌菌株)表现出有效的抗菌活性,具有 MIC(最小抑制)与环丙沙星 (MIC = 8–16 μg mL -1 ) 相比,化合物 4k 在 2 至 16 μg mL -1之间,特别是化合物4k对白色念珠菌和黑曲霉表现出有效的真菌活性,MIC 范围在 8 至 16 μg mL -1