(E)-3-(1-Methyl-1H-imidazol-4-yl)-acrylic acid (Z)-(1S,2S,4R,8R,9S,12R)-11-acetoxymethyl-8-isopropyl-12-methoxy-1,5-dimethyl-15-oxa-tricyclo[10.2.1.04,9]pentadeca-5,10,13-trien-2-yl ester 在
camphor-10-sulfonic acid 作用下,
以
二氯甲烷 、
水 为溶剂,
反应 72.0h,
以95%的产率得到(E)-3-(1-Methyl-1H-imidazol-4-yl)-acrylic acid (Z)-(1S,2S,4R,8R,9S,12R)-11-acetoxymethyl-12-hydroxy-8-isopropyl-1,5-dimethyl-15-oxa-tricyclo[10.2.1.0
4,9]pentadeca-5,10,13-trien-2-yl ester