Synthesis and stereochemical determination of an antifeeding bisabolanoid from Japanese cedar
作者:Takashi Nakahata、Yohsuke Satoh、Shigefumi Kuwahara
DOI:10.1016/j.tetlet.2008.02.039
日期:2008.4
The first enantioselective synthesis of (1S,3R,6R)-1-hydroxy-7(14),10-bisaboladien-4-one, a potent antifeedant isolated from the Japanese cedar. Cryptomeria japonica, was achieved starting from methyl (R)-4-hydroxy-3-methylbutanoate via a stereoselective carbonyl ene cyclization reaction as the key step. Comparison of the spectral data and specific rotation of the synthetic material with those of the natural product led to unambiguous stereochemical assignment of the antifeedant as 1S, 3R, and 6R. (C) 2008 Elsevier Ltd. All rights reserved.