Design, synthesis and biological evaluation of new 5-nitro benzimidazole derivatives as AT1 antagonists with anti-hypertension activities
摘要:
The design, synthesis, in vitro and in vivo evaluation of 5-nitro benzimidazole with 1,4-disubsituted or 1,5-disubsituted indole derivatives as novel angiotensin II receptor antagonist is outlined. Radioligand binding assays showed that 2-(4-((2-butyl-5-nitro-1H-benzo[d] imidazol-1-yl) methyl)-1H-indol-1-yl) benzoic acid, compound 3, displayed a high affinity for the angiotensin II type 1 receptor with IC50 value of 1.03 +/- 0.26 nM. The biological evaluation on spontaneously hypertensive rats and renal hypertensive rats showed that 3 could cause significant decrease on MBP in a dose dependent manner, whose maximal response lowered 30 mmHg of MBP at 5 mg/kg and 41 mmHg of MBP at 10 mg/kg after oral administration, and the significant antihypertensive effect lasted beyond 24 h, which is better than Losartan. Taken together 3 could be considered as an effective and durable anti-hypertension drug candidate. These encouraging results are deserved of further investigation towards its use for therapeutic benefit. (c) 2014 Elsevier Ltd. All rights reserved.
Design, synthesis and biological evaluation of new 5-nitro benzimidazole derivatives as AT1 antagonists with anti-hypertension activities
摘要:
The design, synthesis, in vitro and in vivo evaluation of 5-nitro benzimidazole with 1,4-disubsituted or 1,5-disubsituted indole derivatives as novel angiotensin II receptor antagonist is outlined. Radioligand binding assays showed that 2-(4-((2-butyl-5-nitro-1H-benzo[d] imidazol-1-yl) methyl)-1H-indol-1-yl) benzoic acid, compound 3, displayed a high affinity for the angiotensin II type 1 receptor with IC50 value of 1.03 +/- 0.26 nM. The biological evaluation on spontaneously hypertensive rats and renal hypertensive rats showed that 3 could cause significant decrease on MBP in a dose dependent manner, whose maximal response lowered 30 mmHg of MBP at 5 mg/kg and 41 mmHg of MBP at 10 mg/kg after oral administration, and the significant antihypertensive effect lasted beyond 24 h, which is better than Losartan. Taken together 3 could be considered as an effective and durable anti-hypertension drug candidate. These encouraging results are deserved of further investigation towards its use for therapeutic benefit. (c) 2014 Elsevier Ltd. All rights reserved.
Synthesis, Anti-hypertensive Effect of a Novel Angiotensin II AT1 Receptor Antagonist and its Anti-tumor Activity in Prostate Cancer
作者:Y.-J. Da、W.-D. Yuan、L.-F. Zhu、Z.-L. Chen
DOI:10.1055/s-0032-1329952
日期:——
Since the first non-peptide Ang II receptor antagonist was originally reported, it has become the most common target in the development of new treatments for hypertension. In recent years, all components of the classical RAS have been reported in the prostate, these results suggest the possibility that ARB is a novel therapeutic class of agents for prostate cancer. In this study, a new compound 2-(4-((2-propyl-5-nitro-1H-benzo[d]imidazol-1-yl) methyl)-1H-indol-1-yl) benzoic acid was synthesized and evaluated as a novel angiotensin II AT(1) receptor antagonist by radioligand binding assays, anti-hypertensive assays in vivo and oral acute toxicity test. MTT assays and tests in nude mice were used to demonstrate its anti-tumor activity. This new compound showed high affinity to AT(1) receptor and anti-hypertensive activity in spontaneously hypertensive rats and renal hypertensive rats. Moreover, in human prostate cancer cells and in athymic nude mice bearing human prostate cancer cells, we observed this new compound had an efficient antiproliferative activity in vitro and anti-tumor activity in vivo. The preliminary pharmacological characteristics with oral acute toxicity test suggested that this new compound can be considered as a candidate for both anti-hypertensive and antitumor drug.