3-nitro-7a,8,9,10,11,11a-hexahydro-4-oxo-4H-pyrido[3,2,1-jk]carbazole-5-carboxylic acid 在
镍 水 、
dimethylformamide hydrate 作用下,
以
氢氧化钾 为溶剂,
以to obtain 3.7 g of 3-amino-7a,8,9,10,11,11a-hexahydro-4-oxo-4H-pyrido[3,2,1-jk]carbazol-5-carboxylic acid having a melting point of 253°-356° C. (with decomposition)的产率得到3-amino-2a,8,9,10,11,11a-hexahydro-4-oxo-4H-pyrido[3,2,1-jk]carbazole-5-carboxylic acid