(R)-7,8-dimethoxy-4-methyl-1-(3-methyl-4-nitrophenyl)-3-(5-oxo-4H-1,2,4-oxadiazol-3-yl)-4,5-dihydro-3H-[2,3]benzodiazepine 在
镍 氢气 作用下,
以62%的产率得到3-[(4R)-1-(4-amino-3-methylphenyl)-7,8-dimethoxy-4-methyl-4,5-dihydro-2,3-benzodiazepin-3-yl]-4H-1,2,4-oxadiazol-5-one