[(1'S,2S,2'S,3'R,7'S,8'S,10'R,11'S)-12'-bromo-7'-[tert-butyl(dimethyl)silyl]oxy-1'-hydroxy-10'-[(4-methoxyphenyl)methoxy]-8',15',15'-trimethyl-9',14'-dioxo-13'-prop-2-enoxyspiro[oxirane-2,4'-tricyclo[9.3.1.03,8]pentadec-12-ene]-2'-yl] benzoate 在
sodium tetrahydroborate 、 cerium(III) chloride 作用下,
以
乙醇 为溶剂,
反应 3.0h,
以50%的产率得到[(1'R,2S,2'S,3'R,7'S,8'S,10'R,11'S,14'S)-12'-bromo-7'-[tert-butyl(dimethyl)silyl]oxy-1',14'-dihydroxy-10'-[(4-methoxyphenyl)methoxy]-8',15',15'-trimethyl-9'-oxo-13'-prop-2-enoxyspiro[oxirane-2,4'-tricyclo[9.3.1.03,8]pentadec-12-ene]-2'-yl] benzoate