A General Strategy for Synthesis of Both (6<i>Z</i>)- and (6<i>E</i>)-Cladiellin Diterpenes: Total Syntheses of (−)-Cladiella-6,11-dien-3-ol, (+)-Polyanthellin A, (−)-Cladiell-11-ene-3,6,7-triol, and (−)-Deacetoxyalcyonin Acetate
作者:Hyoungsu Kim、Hyunjoo Lee、Jayoung Kim、Sanghee Kim、Deukjoon Kim
DOI:10.1021/ja065782w
日期:2006.12.1
first total synthesis of an (E)-cladiellin diterpene, (-)-cladiella-6,11-diene-3-ol (1), was accomplished featuring an intramolecular amide enolate alkylation-intramolecular Diels-Alder strategy. In addition, a highly stereo-, regio-, and chemoselective synthetic strategy for other members of the cladiellin diterpenes such as (+)-polyanthellin A (2), (-)-cladiell-11-ene-3,6,7-triol (3), and (-)-deacetoxyalcyonin
(E)-cladiellin 二萜 (-)-cladiella-6,11-diene-3-ol (1) 的首次全合成是通过分子内酰胺烯醇化物烷基化-分子内 Diels-Alder 策略完成的。此外,一种高度立体、区域和化学选择性合成策略,用于 cladiellin 二萜的其他成员,如 (+)-polyanthellin A (2)、(-)-cladiell-11-ene-3,6,7-三醇 (3) 和 (-)-deacetoxyalcyonin 醋酸盐 (4) 是利用合成 (E)-cladiellin 1 作为常用中间体开发的,利用其 C(6)-(E)-oxatricyclic 的独特化学性质骨骼。