7-hydroxy-10β-hydroxymethyl-1β,8β-dimethylgibbane-1α,4aα-carbolactone 在
N,N-二乙基(2-氯-1,1,2-三氟乙基)胺 作用下,
以
二氯甲烷 为溶剂,
生成
7-fluoro-10β-hydroxymethyl-1β,8β-dimethylgibbane-1α,4aα-carbolactone 、
7-fluoro-10β-hydroxymethyl-1β,8α-dimethylgibbane-1α,4aα-carbolactone 、 10β-(2'-fluoro-2'-hydroxyacetoxymethyl)-4aα-hydroxy-7α-fluoro-1β,8α-dimethylgibbane-1α,2'-carbolactone 、
10β-(2'-fluoro-2'-hydroxyacetoxymethyl)-4aα-hydroxy-7α-fluoro-1β,8α-dimethylgibbane-1α,2'-carbolactone