[(2R,3S,4S,5R,6S)-3,4,5-triacetyloxy-6-[4-[[2-[[(1S)-1-[(1R)-1-chloroethyl]-3-[5-[2-(dimethylamino)ethoxy]-1H-indole-2-carbonyl]-1,2-dihydrobenzo[e]indol-5-yl]oxycarbonyl-methylamino]ethyl-methylcarbamoyl]oxymethyl]-2-nitrophenoxy]oxan-2-yl]methyl acetate 在
sodium methylate 作用下,
以
甲醇 为溶剂,
以79%的产率得到[3-nitro-4-[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyphenyl]methyl N-[2-[[(1S)-1-[(1R)-1-chloroethyl]-3-[5-[2-(dimethylamino)ethoxy]-1H-indole-2-carbonyl]-1,2-dihydrobenzo[e]indol-5-yl]oxycarbonyl-methylamino]ethyl]-N-methylcarbamate