Benzoic acid (1S,2S,3S,9S,13S)-13-(tert-butyl-dimethyl-silanyloxy)-1,9-dihydroxy-4-methoxy-12,15,15-trimethyl-tricyclo[9.3.1.03,8]pentadeca-4,7,11-trien-2-yl ester 在
戴斯-马丁氧化剂 作用下,
以
二氯甲烷 为溶剂,
以95%的产率得到Benzoic acid (1S,2S,3S,13S)-13-(tert-butyl-dimethyl-silanyloxy)-1-hydroxy-4-methoxy-12,15,15-trimethyl-9-oxo-tricyclo[9.3.1.0
3,8]pentadeca-4,7,11-trien-2-yl ester