(S)-(-)-2-乙酰氧基丙酸 、
(8S,8aS)-8a-methyl-8-[(2-methylpropan-2-yl)oxy]-2,3,5,6,7,8-hexahydro-1H-naphthalene-2,3-diol 在
lead(IV) acetate 作用下,
以
二氯甲烷 为溶剂,
以70%的产率得到(2'S)-acetoxy-propionic acid (1S)-[(2'S)-acetoxy-propionyloxy]-(5S)-tert-butoxy-(4aS)-methyl-9-oxo-decahydro-cyclohepta[c]pyran-(3S)-yl ester