Isobutyric acid (1R,2S,5S,6R,7R,9R,10S,12S)-9,12-dihydroxy-1,5,9-trimethyl-4,13-dioxo-3-oxa-tricyclo[8.2.1.0
2,6]tridec-7-yl ester 在
sodium tetrahydroborate 作用下,
以
吡啶 、
甲醇 为溶剂,
反应 0.17h,
生成
Isobutyric acid (1R,2S,5S,6R,7R,9R,10R,12S,13S)-12,13-diacetoxy-9-hydroxy-1,5,9-trimethyl-4-oxo-3-oxa-tricyclo[8.2.1.02,6]tridec-7-yl ester