acetic acid (2R,3R,4R,4aS,4bR,8aR,9aS)-(3,4,4a,4b,5,6,8a,9a-octahydro-3,4-dihydroxy-8a-methyl-6-oxo-2H-1,9-dioxafluoren-2-yl)methyl ester 在
lead(IV) tetraacetate 、
sodium carbonate 作用下,
以
二氯甲烷 为溶剂,
反应 2.0h,
以85%的产率得到acetic acid (2R)-2-[(2S,3S,3aR,7aR)-(3-formyl-2,3,3a,4,5,7a-hexahydro-7a-methyl-5-oxobenzofuran-2-yl)oxy]-3-oxopropyl ester