Asymmetric Total Synthesis of an Iboga-Type Indole Alkaloid, Voacangalactone, Newly Isolated from <i>Voacanga africana</i>
作者:Masaya Harada、Ken Nunettsu Asaba、Masumi Iwai、Noriyuki Kogure、Mariko Kitajima、Hiromitsu Takayama
DOI:10.1021/ol3027945
日期:2012.11.16
A new hexacyclic iboga-type indole alkaloid, voacangalactone (1), was isolated from Voacanga africana, and its structure including the absolute configuration was established by asymmetric total synthesis involving such key steps as the asymmetric Diels–Alder reaction using an aminodiene and the construction of an isoquinuclidine ring and an indole skeleton.
从非洲非洲扁豆中分离出一种新的六环iboga型吲哚生物碱voacangalactone(1),并通过不对称全合成建立了包括绝对构型在内的结构,该结构涉及关键步骤,例如使用氨基二烯的不对称Diels–Alder反应和结构异喹啉环和吲哚骨架的结构。