The present invention relates to a novel enantiospecific process for preparing (S)-1- 2(S)-(1,3-dihydro-1,3-dioxo-isoindo-2-yl)-1-oxo-3-phenylpropyl!-1,2 ,3,4-tetrahydro-2-pyridine-carboxylic acid methyl ester which is a useful intermediate in the preparation of 4S- 4.alpha., 7.alpha.(R*), 12b.beta.!!-7- (1-oxo-2(S)-thio-3-phenylpropyl)amino!-1,2,3,4,6,7,8,12b-oc tahydro-6-oxo-pyrido 2,1-a! 2!benzazepine-4-carboxylic acid and 4S- 4.alpha., 7.alpha.(R*), 12b.beta.!!-7- (1-oxo-2(S)-acetylthio-3-phenylpropyl)amino!-1,2,3,4,6,7,8, 12b-octahydro-6-oxo-pyrido 2,1-a! 2!benzazepine-4-carboxylic acid and pharmaceutically acceptable salts thereof which is useful as an inhibitor of enkephalinase and angiotensin converting enzyme and to novel intermediates thereof.
本发明涉及一种新的对映选择性制备(S)-1-2(S)-(1,3-二氢-1,3-二氧-异
吲哚-2-基)-1-氧-3-苯基丙基!-1,2,3,4-四氢-2-
吡啶羧酸甲酯的方法,该方法是制备4S-4α,7α(R*),12bβ!!-7-(1-氧代-2(S)-
硫代-3-苯基丙基)
氨基!-1,2,3,4,6,7,8,12b-八氢-6-氧代-
吡啶2,1-a!2!苯并-4-
羧酸和4S-4α,7α(R*),12bβ!!-7-(1-氧代-2(S)-乙酰
硫代-3-苯基丙基)
氨基!-1,2,3,4,6,7,8,12b-八氢-6-氧代-
吡啶2,1-a!2!苯并-4-
羧酸和其药学上可接受的盐,这些化合物可用作
脑啡肽酶和
血管紧张素转换酶的
抑制剂,以及其新的中间体。