aniline hydrochloride 、
methyl (4aS,12aS)-4a-ethyl-1-hydroxy-7-(2-oxoethyl)-2,3,4,12a-tetrahydroindolo[1,2-a][1,8]naphthyridine-6-carboxylate 在
sodium cyanoborohydride 作用下,
以
甲醇 为溶剂,
反应 16.0h,
以45%的产率得到methyl (4aS,12aS)-7-[[3-[(4aS,12aS)-4a-ethyl-1-hydroxy-6-methoxycarbonyl-2,3,4,12a-tetrahydroindolo[1,2-a][1,8]naphthyridin-7-yl]-1,2,3,4-tetrahydroquinolin-2-yl]methyl]-4a-ethyl-1-hydroxy-2,3,4,12a-tetrahydroindolo[1,2-a][1,8]naphthyridine-6-carboxylate