Electrophilic cyclization of ?-monoterpenols as a model for the biosynthesis of tri- and tetracyclic diterpenes
摘要:
Low temperature electrophilic cyclization of alpha-geraniol, alpha-nerol, and alpha-linalool initiated by BF3.etherate leads to the formation of dimethylvinylcyclohexenes and bicyclo[3.2.1]octyl fluoride, which have monoterpene skeletons. The alpha-monoterpenol starting materials may be regarded as close models to labdadienols, and their transformation as mimicking the biosynthesis of diterpenes in the pimarane and gibbane series according to Wenkert.