ent-3α-Acetoxy-2β-hydroxy-16-oxo-17,20-dinor-9α,15α-cyclogibberella-1(10),11-diene-7,19-dioic acid 7-(methyl ester) 19,2-lactone 在
Rh/Al
2O
3 氢气 作用下,
以
乙酸乙酯 为溶剂,
反应 3.0h,
以90%的产率得到ent-3α-Acetoxy-2β-hydroxy-16-oxo-17,20-dinor-9α,15α-cyclogibberell-1(10)-ene-7,19-dioic acid 7-(methyl ester) 19,2-lactone