作者:Pingyan Bie、Chenglu Zhang、Anpai Li、Xuanjia Peng、Tongxing Wu、Xinfu Pan
DOI:10.1002/jccs.200200089
日期:2002.8
The firsttotalsynthesis of (+/-)-Celaphanol A was accomplished starting from alpha-cyclocitral and 3,4-dimethoxy benzyl chloride in six steps. The intramolecular cyclization with BF3.Et2O and enolization in t-BuOK/t-BuOH were the key steps. The process of intramolecular cyclization afforded an all-cis isomer intermediate for synthesis of aromatic tricyclic diterpenes.
(+/-)-Celaphanol A 的第一次全合成是从 α-环柠檬醛和 3,4-二甲氧基苄基氯开始分六个步骤完成的。BF3.Et2O的分子内环化和t-BuOK/t-BuOH中的烯醇化是关键步骤。分子内环化过程提供了用于合成芳族三环二萜的全顺式异构体中间体。