A FeCl3-promoted highly atropodiastereoselective cascade reaction: synthetic utility of radical cations in indolostilbene construction
作者:Kartini Ahmad、Noel F. Thomas、Mat Ropi Mukhtar、Ibrahim Noorbatcha、Jean-Frederic Faizal Weber、Mohd Azlan Nafiah、Saraswati S. Velu、Koichi Takeya、Hiroshi Morita、Chuan-Gee Lim、A. Hamid A. Hadi、Khalijah Awang
DOI:10.1016/j.tet.2008.11.100
日期:2009.2
The FeCl3-promoted oxidative cyclization/coupling of acetamidostilbenes possessing 3-methoxy, 4-methoxy and 3,5-methoxy substitutions (21), (22) and (23) is described. Only 3,5-substitution gave rise to novel indolostilbenes, each possessing two stereogenic axes (axially chiral but racemic dimers (39) and (40)). The 4-methoxy substituted acetamidostilbenes, by contrast, yielded the bisindoline dimer (36). (C) 2008 Elsevier Ltd. All rights reserved.