Metabolism-based synthesis, biologic evaluation and SARs analysis of O-methylated analogs of quercetin as thrombin inhibitors
作者:Zhi-Hao Shi、Nian-Guang Li、Yu-Ping Tang、Wei-Li、Lian-Yin、Jian-Ping Yang、Hao-Tang、Jin-Ao Duan
DOI:10.1016/j.ejmech.2012.04.044
日期:2012.8
inhibitory activities than that of quercetin. Preliminary SARs analysis showed that hydroxyl groups at C-3′ and C-4′ position in the B-ring and hydroxyl group at C-3 position in the C-ring played key roles in the thrombin inhibitory activity. The findings of this study would provide information for the exploitation and utilization of quercetin as thrombin inhibitor for thrombotic disease treatment.
在血液中,槲皮素主要以代谢形式存在。为了研究这些槲皮素代谢产物在心血管疾病中的活性,基于体内代谢合成了17种甲基槲皮素衍生物通过凝血酶原时间(PT),活化的部分凝血活酶时间(APTT),凝血酶时间(TT)和纤维蛋白原(FIB)的分析来评估它们的凝血酶抑制活性。结果表明6种甲基槲皮素衍生物具有比槲皮素更强的抑制活性。SAR的初步分析表明,B环的C-3'和C-4'位置的羟基和C环的C-3位置的羟基在凝血酶抑制活性中起关键作用。这项研究的结果将为槲皮素作为凝血酶抑制剂治疗血栓性疾病的开发和利用提供信息。