therapeutic target for the treatment of various types of cancer. Here, we designed and synthesized 30 panaxadiol (PD) derivatives and evaluated their inhibitoryactivities against HIF-1α transcription. Of these, compound 3l exhibited the most promising inhibitoryactivity (IC50 = 3.7 µM) and showed significantly decreased cytotoxicity compared with PD. Compound 9e exhibited the strongest cytotoxic effect
on the well-known cytotoxicity of indole compounds, we used the ‘Fisher indole synthesis’ method to introduce appropriately substituted indole rings into panaxadiol (PD), generating eighteen novel Panaxadiol indole derivatives. Six human cancer cell lines (A549, HepG-2, HCT-116, SGC-7901, MDA-MB-231, PC-3 cells) and one normal ovarian cell lines (IOSE144) were designed to evaluate the anti-proliferative
Synthesis of dammarane-type triterpene derivatives and their ability to inhibit HIV and HCV proteases
作者:Ying Wei、Chao-Mei Ma、Masao Hattori
DOI:10.1016/j.bmc.2009.03.019
日期:2009.4
We synthesized dammarane-type triterpene derivatives and evaluated their ability to inhibit HIV-1 and HCV proteases to understand their structure-activity relationships. All of the mono- and di-succinyl derivatives (5a-5f) were powerful inhibitors of HIV-1 protease (IC50 < 10 mu M). However, only di-succinyl (5e) and 2,3-seco-2,3-dioic acid (3b) derivatives similarly inhibited HCV protease (IC50 < 10 mu M). A-nor dammarane- type triterpenes (4a and 4b, IC50 10.0 and 29.9 mu M, respectively) inhibited HIV-1 protease moderately or strongly, but were inactive against HCV protease. All compounds that powerfully inhibited HIV-1 or HCV protease did not appreciably inhibit the general human proteases, renin and trypsin (IC50 > 1000 mu M). These findings indicated that the mono-succinyl dammarane type derivatives (5a-5d) selectively inhibited HIV-1 protease and that the di-succinyl (5e, 5f) as well as 2,3-seco-2,3-dioic acid (3b) derivatives preferably inhibited both viral proteases. (C) 2009 Elsevier Ltd. All rights reserved.