bis[(3R,4S)-1-benzoyl-2-oxo-4-phenylazetidin-3-yl] (4R,5R)-2,2-dimethyl-1,3-dioxolane-4,5-dicarboxylate 、 [(1S,2S,4S,7R,9S,10R,11R,12R,15S)-4,12-diacetyloxy-1,11,15-trihydroxy-10,14,17,17-tetramethyl-9-triethylsilyloxy-6-oxatetracyclo[11.3.1.03,10.04,7]heptadec-13-en-2-yl] benzoate 在
lithium hexamethyldisilazane 作用下,
以
四氢呋喃 为溶剂,
生成 bis[(1S,2R)-1-benzamido-3-[[(1S,2S,4S,7R,9S,10R,11R,12R,15S)-4,12-diacetyloxy-2-benzoyloxy-1,11-dihydroxy-10,14,17,17-tetramethyl-9-triethylsilyloxy-6-oxatetracyclo[11.3.1.03,10.04,7]heptadec-13-en-15-yl]oxy]-3-oxo-1-phenylpropan-2-yl] (4R,5R)-2,2-dimethyl-1,3-dioxolane-4,5-dicarboxylate