乙酸酐 、 [(3aS,4S,6E,8S,10E,12S,14E,15aS)-4-acetyloxy-12-hydroxy-6,10,14-trimethyl-3-methylidene-2-oxo-3a,4,5,8,9,12,13,15a-octahydrocyclotetradeca[b]furan-8-yl] acetate 在
吡啶 作用下,
反应 1.0h,
以90%的产率得到[(3aS,4S,6E,8S,10E,12S,14E,15aS)-4,12-diacetyloxy-6,10,14-trimethyl-3-methylidene-2-oxo-3a,4,5,8,9,12,13,15a-octahydrocyclotetradeca[b]furan-8-yl] acetate