Provided herein is a novel process for the preparation of triazolo[4,5-d]pyrimidine derivatives. Provided particularly herein is a novel, commercially viable and industrially advantageous process for the preparation of highly pure ticagrelor or a pharmaceutically acceptable salt thereof. Provided further herein is a novel process for the preparation of substituted cyclopentanamine derivatives, which are useful intermediates in the preparation of triazolo[4,5-d]pyrimidine compounds. Provided particularly herein is a novel, commercially viable and industrially advantageous process for the preparation of a ticagrelor intermediate, 2-[[(3aR,4S,6R,6aS)-6-amino-2,2-dimethyltetrahydro-3aH-cyclopenta[d][1,3]-dioxol-4-yl]oxy]-1-ethanol.
本文提供了一种制备三唑并[4,5-d]
嘧啶衍
生物的新工艺。特别提供了一种新的、商业可行和工业优势的工艺,用于制备高纯度的
替卡格雷洛或其药用可接受盐。此外,本文还提供了一种制备取代
环戊胺衍
生物的新工艺,这些衍
生物是制备三唑并[4,5-d]
嘧啶化合物的有用中间体。特别提供了一种新的、商业可行和工业优势的工艺,用于制备
替卡格雷洛中间体2-[[(3aR,4S,6R,6aS)-6-amino-2,2-dimethyltetrahydro-3aH-cyclopenta[d][1,3]-dioxol-4-yl]oxy]-1-
乙醇。