The present invention relates to a method for preparing 3-[(3S)-7- bromo-2-oxo-5-(pyridin-2-yl)-2,3-dihydro-IH-[l,4]-benzodiazepin-3-yl] propionic acid methyl ester from (2-amino-5-bromo-phenyl)-pyridin-2- yl-methanone. The present invention also relates to new compounds useful as intermediates in that method, methyl (4S)-4-amino-5-[4- bromo-2-(pyridin-2-carbonyl)anilino]-5-oxo-pentanoate hydrobromide salt and methyl (4S)-4-(benzyloxycarbonylamino)-5-[4-bromo-2- (pyridin-2-carbonyl)anilino]-5-oxo-pentanoate.
本发明涉及一种从(2-
氨基-5-
溴苯基)-
吡啶-2-基甲酮制备3-[(3S)-7-
溴-2-氧-5-(
吡啶-2-基)-2,3-二氢-IH-[1,4]-苯二氮杂环己-3-基]
丙酸甲酯的方法。本发明还涉及作为该方法中间体有用的新化合物,即
甲酸甲酯(4S)-4-
氨基-5-[4-
溴-2-(
吡啶-2-甲酰基)
苯胺基]-5-氧代-
戊酸氢溴酸盐和
甲酸甲酯(4S)-4-(苄氧羰基
氨基)-5-[4-
溴-2-(
吡啶-2-甲酰基)
苯胺基]-5-氧代-
戊酸甲酯。