1,1β-((propane-1,3-diyl)dioxy)-bis(((2-(4β-D-2,3,4,6-tetra-O-acetyl-galactopyranosyloxy-3-nitro-phenyl)methoxycarbonyl)amino-4-benzyloxy-5-methoxy-1,4-phenylene)carbonyl)-bis((2S)-pyrrolidine-2-carboxaldehyde diethylthioacetal) 在
calcium carbonate 、 mercury dichloride 作用下,
以
水 、
乙腈 为溶剂,
反应 12.0h,
以75%的产率得到8,8'-[[(propane-1,3-diyl)dioxy]-bis(11S,11aS,11'S,11'aS)-10-(4-β-D-2,3,4,6-tetra-O-acetylgalactopyranosyloxy-3-nitrophenyl)methoxycarbonyl-11-hydroxy-7-methoxy-1,2,3,10,11,11a-hexahydro-5H-pyrrolo[2,1-c][1,4]-benzodiazepin-5-one]