A process for the synthesis of trandolapril which comprises condensing N-[I-(S)-ethoxycarbonyl-3-phenylpropyl]-L-alanine N-carboxyanhydride with trans octahydro-1H-indole-2-carboxylic acid in a first organic solvent comprising a water immiscible inert organic solvent and in the presence of a base, and isolating trandolapril from a second organic solvent. N-[1-(S)-ethoxycarbonyl-3-phenylpropyl]-L-alanine N-carboxyanhydride may also be condensed with (2S,3aR,7aS) octahydro-1H-indole-2-carboxylic acid in a first organic solvent and in the presence of a base, and trandolapril isolated. There is also provided a process for the resolution of racemic trans octahydro-1H-indole-2-carboxylc acid.
一种合成曲唑普利的方法,包括在第一有机溶剂中与一种
水不相溶的惰性有机溶剂和碱的存在下,将N-[1-(S)-乙氧羰基-3-苯基丙基]-
L-丙氨酸N-
羧酸酐与反式
八氢-1H-吲哚-2-羧酸缩合,并从第二有机溶剂中分离曲唑普利。N-[1-(S)-乙氧羰基-3-苯基丙基]-
L-丙氨酸N-
羧酸酐也可以与(2S,3aR,7aS)反式
八氢-1H-吲哚-2-羧酸在第一有机溶剂中和碱的存在下缩合,然后分离曲唑普利。还提供了一种拆分外消旋反式
八氢-1H-吲哚-2-羧酸的方法。