乙酸酐 、
Acetic acid (1R,2R,3R,4R,5S,7S,8S,9R,10R,13S)-5,7,10,13-tetraacetoxy-2-hydroxy-4-hydroxymethyl-8,12,15,15-tetramethyl-tricyclo[9.3.1.03,8]pentadec-11-en-9-yl ester 在
吡啶 作用下,
生成 Acetic acid (1R,2R,3R,4R,5S,7S,8S,9R,10R,13S)-2,5,7,10,13-pentaacetoxy-4-acetoxymethyl-8,12,15,15-tetramethyl-tricyclo[9.3.1.0
3,8]pentadec-11-en-9-yl ester