Facile synthesis of 4″-<i>O</i>-alkyl-(–)-EGCG derivatives through regioselective deacetylative alkylation
作者:Yujin Seo、Mi Kyoung Kim、Hyunah Choo、Youhoon Chong
DOI:10.1080/00397911.2016.1278233
日期:2017.4.3
for this purpose, efficient synthetic strategy needs to be developed. In this study, efficient preparation of the 4″-O-alkyl-(–)-EGCGs (4a–e) was demonstrated using KI/K2CO3-promoted deacetylative alkylation of peracetyl (–)-EGCG, which could be broadly utilized for the preparation of various D-ring alkyl ethers of (–)-EGCG and thereby extensive structure–activity relationship study. GRAPHICAL ABSTRACT
摘要 (-)-表没食子儿茶素-3-没食子酸酯 [(-)-EGCG] 的 D 环甲基醚的治疗潜力需要对 (-)-EGCG 的各种 D 环醚进行广泛的结构-活性关系研究,但是,为此目的,需要开发有效的合成策略。在这项研究中,使用 KI/K2CO3 促进的过乙酰基 (-)-EGCG 的脱乙酰烷基化证明了 4″-O-烷基-(-)-EGCGs (4a-e) 的有效制备,可广泛用于制备 (-)-EGCG 的各种 D 环烷基醚,从而进行广泛的构效关系研究。图形概要