Stereoselective total synthesis of (±)-cubitene, a diterpene isolated fromtermitesoldiers, and its stereisomer has been achieved utilizing the anion-induced intramolecular cyclization.
Synthesis of macrocyclic terpenoids by intramolecular cyclization XIII.
作者:Mitsuaki Kodama、Toshiya Takahashi、Tsutomu Kojima、Sho Ito
DOI:10.1016/s0040-4020(01)86074-9
日期:1988.1
a novel diterpene isolated from defense secretion of termites, has been accomplished using an intramolecular reaction of α-sulfenyl carbanion with epoxide. Hydride reduction of the ketone 11 obtained by Claisenrearrangementoccurred in unexpectedly high stereoselectivity yielding the chlorohydrin 12 with the desired stereochemistry.