Synthesis of the tumor-inhibitory tobacco constituents .alpha.- and .beta.-2,7,11-cembratriene-4,6-diol by diastereoselective [2,3] Wittig ring contraction
Synthesis of 6-hydroxycembrane precursors by conformationally controlled diastereoselective [2,3] wittig ring contraction
作者:James A. Marshall、Edward D. Robinson、Jacques Lebreton
DOI:10.1016/0040-4039(88)85289-4
日期:1988.1
[2,3] Wittigringcontraction of the alkoxy substituted 17-membered allylic propargylicethers 8 and 10 gives the trans/syn products 11 and 12 as the major diastereoisomers.