Synthesis and biological evaluation of ring A and/or C expansion and opening echinocystic acid derivatives for anti-HCV entry inhibitors
作者:Han Wang、Fei Yu、Yiyun Peng、Qi Wang、Xu Han、Renyang Xu、Xiaoshu Zhou、Chuanxing Wan、Zibo Fan、Pingxuan Jiao、Yongmin Zhang、Lihe Zhang、Demin Zhou、Sulong Xiao
DOI:10.1016/j.ejmech.2015.08.034
日期:2015.9
Echinocystic acid (EA), a naturally occurring oleanane-type triterpene isolated from Dipsacus asperoides, was found to have anti-HCV entry activity in our previous study. Expansion of triterpene structural diversity, including the ring A and/or C expansion and opening, was performed. To elucidate the pharmacophore of EA, seven lactones (8, 16, 17, 24, 26, 35 and 41), three 3,28-dioic acids (9, 36 and
棘孢囊酸(EA)是一种天然存在的从双歧双歧杆菌中分离出的齐墩果烷型三萜烯,在我们先前的研究中被发现具有抗HCV进入活性。进行了三萜结构多样性的扩展,包括环A和/或C的扩展和开放。为了阐明EA的药效,七个内酯(8,16,17,24,26,35和41),三个3,28-二酸(9,36和42)和两个五醇(10和27)合成。评估了这些衍生物及其母体化合物EA和类似物α,β-不饱和酮(18)的抗HCV进入活性。所有产品均未显示出改善作用,但对EA的效力有不利影响。结果表明,EA的环A和C是高度保守的,表明刚性骨架的空间效应对效能具有深远的影响。