Synthesis of (±)-eleutherin, (±)-isoeleutherin, and their demethoxy analogues. A novel synthetic approach
作者:Yoshinori Naruta、Hidemitsu Uno、Kazuhiro Maruyama
DOI:10.1039/c39810001277
日期:——
(±)-Eleutherin (1) and (±)-isoeleutherin (3) are prepared by intramolecular cyclization to the naphthopyrans of 2-acetyl-3-allyl-8-methoxy-1, 4-napthoquinone, which is itself obtained by the Lewis acid-mediated allylation of 2-acetyl-8-methoxy-1, 4-naphthoquinone (5) with allyltrimethylstannane (7).
通过分子内环化成2-乙酰基-3-烯丙基-8-甲氧基-1、4-萘醌的萘并吡喃而制备(±)-伊卢色林(1)和(±)-异弹性蛋白(3),其本身是通过路易斯酸介导的2-乙酰基-8-甲氧基-1,4-萘醌(5)与烯丙基三甲基锡烷(7)的烯丙基化。