(1S,2S,4aR,4bR,7S,9aS,10S,10aR)-2,7-diacetoxy-1-methyl-8-methylene-13-oxo-1,2,4b,5,6,7,8,9,10,10a-decahydro-4a,1-(epoxymethano)-7,9amethanobenzo[a]azulene-10-carboxylic acid 在
吡啶 、
lead(IV) acetate 作用下,
以
苯 为溶剂,
反应 15.0h,
以7%的产率得到O(3), O(13)-Diacetyl-6β-phenyl-7-nor-gibberellin-A3