(4R,6S,10E)-4-hydroxy-13-[(2R)-6-hydroxy-2,8-dimethyl-3,4-dihydrochromen-2-yl]-2,6,10-trimethyltrideca-2,10-dien-5-one 、
乙酸酐 在
吡啶 作用下,
反应 5.0h,
以96%的产率得到[(2R)-2-[(3E,8S,10R)-10-acetyloxy-4,8,12-trimethyl-9-oxotrideca-3,11-dienyl]-2,8-dimethyl-3,4-dihydrochromen-6-yl] acetate