Vinyl 치환기를 갖는 4급탄소 Unit의 합성

Synthesis of Quaternary Carbon Unit Containing Vinyl Substituent

In connection with the synthesis of the biologically active pimarane diterpenoids, some synthetic routes to the quaternary carbon unit were examined. Especially, Claisen rearrangement of allyl acetates prepared from acetol provided ${\gamma}-hydroxy$ acid containing vinyl substituent as the desired unit.