[(1R,2R,3S,4S,6R)-2-(2-aminoethylamino)-4,6-diazido-3-[(2S,3R,4R,5R,6R)-3-azido-6-(azidomethyl)-4,5-dibenzoyloxyoxan-2-yl]oxycyclohexyl] benzoate 、
1-甲基-9h-beta-咔啉-3-羧酸 在
1-羟基苯并三唑 、 O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate 、
N,N-二异丙基乙胺 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以67%的产率得到(2R,3R,4R,5R,6S)-5-azido-2-(azidomethyl)-6-(((1S,2R,3R,4R,6S)-4,6-diazido-3-(benzoyloxy)-2-((2-(1-methyl-9H-pyrido[3,4-b]indole-3-carboxamido)ethyl)amino)cyclohexyl)oxy)tetrahydro-2H-pyran-3,4-diyl dibenzoate