The invention relates to preparation of ticagrelor of formula I and comprises a reaction of a compound of formula IV with a deprotection agent in a solvent to a compound of formula V, which is advantageously isolated by crystallization and subsequently used for the preparation of ticagrelor. The substituent R in formulae IV and V is CH2CH2OH, CH2COOH, or CH2COOR1; R1 is a branched or unbranched R1-C4 alkyl; and X is NH2, NO2f or NHCHO.
本发明涉及制备公式I的
替卡格雷洛的方法,包括将公式IV的化合物与去保护剂在溶剂中反应得到公式V的化合物,优选通过结晶分离得到公式V,然后用于制备
替卡格雷洛。公式IV和V中的取代基R为CH2CH2OH、CH2COOH或CH2COOR1;R1为分支或非分支的R1-C4烷基;X为NH2、NO2f或NHCHO。