Provided herein are novel processes for the preparation of phenylcyclopropylamine derivatives, which are useful intermediates in the preparation of triazolo[4,5-d]pyrimidine compounds. Provided particularly herein are novel, commercially viable and industrially advantageous processes for the preparation of a substantially pure ticagrelor intermediate, trans-(1R,2S)-2-(3,4-difluorophenyl)-cyclopropylamine. Provided further herein are novel acid addition salts of trans-(1R,2S)-2-(3,4-difluorophenyl)-cyclopropylamine, and process for their preparation. The intermediate and its acid addition salts are useful for preparing ticagrelor, or a pharmaceutically acceptable salt thereof, in high yield and purity.
本文提供了一种制备苯基
环丙胺衍
生物的新型工艺,这些衍
生物在三唑并[4,5-d]
嘧啶化合物的制备中是有用的中间体。特别提供了一种新颖、商业可行且在工业上具有优势的工艺,用于制备一种基本纯的
替卡格雷中间体,即trans-(1R,2S)-2-(3,4-二
氟苯基)-
环丙胺。此外,本文还提供了trans-(1R,2S)-2-(3,4-二
氟苯基)-
环丙胺的新型酸加盐,以及其制备工艺。该中间体及其酸加盐对于高产率和纯度制备
替卡格雷或其药用可接受盐是有用的。