(3aS,6aS,7S,8S,11S,11aS,11bS)-7,11-Bis-benzyloxy-8-(diisopropyl-methyl-silanyloxy)-2,2,9,9-tetramethyl-6-methylene-8-(3-oxo-butyl)-decahydro-1,3-dioxa-cycloocta[de]naphthalen-10-one 在
lithium aluminium tetrahydride 、 titanium(III) chloride 作用下,
以
四氢呋喃 为溶剂,
以64%的产率得到(1S,2S,3S,6R,7R,8S,9S,13S,17S)-6,11,11,18,18-pentamethyl-3-[methyl-di(propan-2-yl)silyl]oxy-16-methylidene-2,8-bis(phenylmethoxy)-10,12-dioxatetracyclo[7.7.1.13,7.013,17]octadecane-6,7-diol