3-Amino-6,8-dichloro-2,3,4,9-tetrahydro-1H-carbazole-3-carboxylic acid 、
N-Benzyloxycarbonyl-L-isoleucin-(N-hydroxysuccinimidester) 在
4-二甲氨基吡啶 、
N,N-二异丙基乙胺 作用下,
以
DMF (N,N-dimethyl-formamide) 为溶剂,
反应 4.0h,
生成 (S)-3-((S)-2-benzyloxycarbonylamino-3-methyl-pentanoylamino)-6,8-dichloro-2,3,4,9-tetrahydro-1H-carbazole-3-carboxylic acid 、 (R)-3-((S)-2-benzyloxycarbonylamino-3-methyl-pentanoylamino)-6,8-dichloro-2,3,4,9-tetrahydro-1H-carbazole-3-carboxylic acid