六甲基磷酰三胺 、
methyl (1S,2R,4aR,4bR,7S,9aR,10S,10aR)-7-acetoxy-2-hydroxy-1-methyl-8,13-dioxododecahydro-4a,1-(epoxymethano)-7,9a-methanobenzo[a]azulene-10-carboxylate 反应 2.0h,
以4 mg的产率得到ent-13-acetoxy-10-hydroxy-16-oxo-17,20-dinorgibberell-2-ene-7,19-dioic acid 19,10-lactone 7-methyl ester