描述了吗啡生物碱的四环氢菲骨架的C-14-受体的快速和立体选择性构建。通过三个关键的转化,从sh草酸通过九个步骤以11%的总收率获得核心结构:(i)double草酸与2-碘异香兰素在C-3处通过两次S N 2转化形成芳基醚5;(ii)分子内的Heck反应以构建二氢苯并呋喃环,和(iii)McMurry偶合以提供对菲核心。
A pattern recognition approach to 14-epi-hydrophenanthrene core of the morphine alkaloids based on shikimic acid
作者:Tung N. Dinh、Anqi Chen、Christina L.L. Chai
DOI:10.1016/j.tet.2011.03.063
日期:2011.5
An expeditious and stereoselective construction of C-14-epimer of the tetracyclic hydrophenanthrene framework of the morphine alkaloids is described. The core structure is obtained in nine steps in 11% overall yield from shikimic acid via three key transformations: (i) coupling of shikimic acid with 2-iodoisovanillin at C-3 by double SN2 inversion to form the aryl ether 5; (ii) an intramolecular Heck
描述了吗啡生物碱的四环氢菲骨架的C-14-受体的快速和立体选择性构建。通过三个关键的转化,从sh草酸通过九个步骤以11%的总收率获得核心结构:(i)double草酸与2-碘异香兰素在C-3处通过两次S N 2转化形成芳基醚5;(ii)分子内的Heck反应以构建二氢苯并呋喃环,和(iii)McMurry偶合以提供对菲核心。