乙酸酐 、 (1R,2R,6S,7R,11S,13R)-7-[(2S)-2-(furan-3-yl)-2-hydroxyethyl]-11-hydroxy-13-methylspiro[9-oxatricyclo[5.3.3.01,6]tridecane-2,2'-oxirane]-8-one 在
吡啶 作用下,
反应 48.0h,
以56 mg的产率得到[(1R,2R,6S,7R,11S,13R)-7-[(2S)-2-acetyloxy-2-(furan-3-yl)ethyl]-13-methyl-8-oxospiro[9-oxatricyclo[5.3.3.01,6]tridecane-2,2'-oxirane]-11-yl] acetate