2-Methyl-4/5-nitroimidazole derivatives potentiated against sexually transmitted Trichomonas : Design, synthesis, biology and 3D-QSAR study
作者:Dhanaraju Mandalapu、Bhavana Kushwaha、Sonal Gupta、Nidhi Singh、Mahendra Shukla、Jitendra Kumar、Dilip K. Tanpula、Satya N. Sankhwar、Jagdamba P. Maikhuri、Mohammad I. Siddiqi、Jawahar Lal、Gopal Gupta、Vishnu L. Sharma
DOI:10.1016/j.ejmech.2016.09.006
日期:2016.11
Trichomoniasis is the most prevalent, non-viral sexually transmitted diseases (STD) caused by amitochondriate protozoan Trichomonas vaginalis. Increased resistance of T. vaginalis to the marketed drug Metronidazole necessitates the development of newer chemical entities. A library of sixty 2-methyl-4/5-nitroimidazole derivatives was synthesized via nucleophilic ring opening reaction of epoxide and the efficacies against drug-susceptible and -resistant Trichomonas vaginalis were evaluated. All the molecules except two were found to be active against both susceptible and resistant strains with MICs ranging 8.55-336.70 mu M and 28.80-1445.08 mu M, respectively. Most of the compounds were remarkably more effective than the standard Metronidazole. This study analyzes the in vitro and in vivo activities of the new 5-nitroimidazoles, which were found to be safe against human cervical HeLa cells with good selectivity index. The exploration of SAR by the synthesis of four different prototypes and 3D-QSAR study has shown the importance of prototype 1 over other prototypes. (C) 2016 Elsevier Masson SAS. All rights reserved.