acetic acid (3aR,4R,5aS,6aR,10aR,10bS,10cR)-(3a,5a,6a,9,10,10a,10b,10c-octahydro-2,2-dimethyl-1,3,5,6-tetra-oxa-9-oxo-6a-propyl-4H-cyclopenta[c]fluoren-4-yl)methyl ester 在
水 、
三氟乙酸 作用下,
以
四氢呋喃 为溶剂,
以86%的产率得到acetic acid (2R,3R,4R,4aS,4bR,8aR,9aS)-(3,4,4a,4b,5,6,8a,9a-octahydro-3,4-dihydroxy-1,9-dioxa-6-oxo-8a-propyl-2H-fluoren-2-yl)methyl ester