Synthesis, structure−activity relationship and biological evaluation of novel N-substituted matrinic acid derivatives as host heat-stress cognate 70 (Hsc70) down-regulators
摘要:
Oxymatrine (1) is a natural anti-hepatitis B virus (HBV) drug that down-regulates host heat-stress cognate 70 (Hsc70) expression through a mechanism different from that of nucleosides. Taking Hsc70 as a target against HBV, 26 novel N-substituted matrinic acid analogs were designed, synthesized and evaluated for their regulation of Hsc70 mRNA expression with 1 as the lead. The SAR analysis revealed that (i) the carboxyl group at the 11-position was required for activity; (ii) introducing of a substituent on the nitrogen atom at the 12-position of 3, especially substituted benzyl, might significantly improve the activity. Among these analogs, compound 9p possessing N-p-methoxylbenzyl afforded an increased anti-HBV effect in comparison with 1. We consider 9p a promising anti-HBV candidate. (C) 2011 Elsevier Ltd. All rights reserved.
为了开发新的潜在农药,通过对两种非食品生物活性产物苦参碱和胆固醇进行改性,制备了一系列苦参碱-胆固醇衍生物。两种N-苯基磺酰基matrinic酯(5i和5j)对Mythimna separata Walker的杀虫活性最强。两种N-苄基matrinic酯(5e和5g)对柠檬蚜Avans citricola Van der Goot表现出最有希望的杀蚜虫活性。尤其是化合物5e在温室中显示了对柠檬曲霉的良好控制效果。他们的结构-活性关系的一些有趣的结果也被观察到。通过逆转录聚合酶链反应(RT-PCR)和定量实时聚合酶链反应(qRT-PCR)分析柠檬酸曲霉成人的HMG-CoA还原酶,