sodium acetate 、
Acetic acid 9-acetoxy-4-(1,1-dimethyl-allyl)-5-hydroxy-1,1,2-trimethyl-6-oxo-1,2-dihydro-6H-3,11-dioxa-cyclopenta[a]anthracen-10-yl ester 在
乙酸酐 作用下,
以50%的产率得到Acetic acid 9,10-diacetoxy-4-(1,1-dimethyl-allyl)-1,1,2-trimethyl-6-oxo-1,2-dihydro-6H-3,11-dioxa-cyclopenta[a]anthracen-5-yl ester