ent-3α-acetoxy-10-hydroxy-13-methyl-16-oxo-8,13-epi-17,20-dinorgibberell-1-ene-7,19-dioic acid 19,10-lactone 7-methyl ester 在
sodium tetrahydroborate 作用下,
以
甲醇 、
氯仿 为溶剂,
反应 0.5h,
以93%的产率得到ent-3α-acetoxy-10β,16β-dihydroxy-13-methyl-17,20-bisnor-8:13-isogibberell-1-en-7,19-dioic acid 19:10-lactone 7-methyl ester