(10S,14R)-8-(hydroxymethyl)-5-methoxy-4,12,12-trimethyl-11,13-dioxa-1-azatetracyclo[7.6.0.02,7.010,14]pentadeca-2(7),4,8-triene-3,6-dione 、
乙酸酐 在
三乙胺 作用下,
以
二氯甲烷 为溶剂,
反应 18.0h,
以97%的产率得到[(10S,14R)-5-methoxy-4,12,12-trimethyl-3,6-dioxo-11,13-dioxa-1-azatetracyclo[7.6.0.02,7.010,14]pentadeca-2(7),4,8-trien-8-yl]methyl acetate