[EN] PROCESS FOR PREPARATION OF ATAZANAVIR OR ITS BISULFATE SALT<br/>[FR] PROCÉDÉ DE PRÉPARATION D'ATAZANAVIR OU DE SON SEL BISULFATE
申请人:RANBAXY LAB LTD
公开号:WO2013014633A1
公开(公告)日:2013-01-31
The present invention relates to an improved process for the preparation of atazanavir bisulfate, an inhibitor of retroviral aspartate protease. The process of the present invention comprises conversion of 1,1-dimethylethyl[(2S,3R)-4-chloro-3-hydroxy- -phenylbutan-2-yl]carbamate (Formula II) into 1-[4-(pyridine-2-yl)-phenyl]-4(S)-5 hydroxy-2-N-tert-butoxycarbonylamino-5(S)-N-(N-methoxycarbonyl-(L)-tert- leucyl)amino-6-phenyl-2-azahexane (Formula VII) without isolating intermediate compounds formed therein, followed by its subsequent conversion to atazanavir or its bisulfate salt.
本发明涉及一种改进的制备阿扎那韦硫酸盐的方法,阿扎那韦是一种逆转录病毒天冬氨酸蛋白酶抑制剂。本发明的方法包括将1,1-二甲基乙基[(2S,3R)-4-氯-3-羟基苯丁基]氨基甲酸酯(式II)转化为1-[4-(吡啶-2-基)-苯基]-4(S)-5-羟基-2-N-叔丁氧羰基氨基-5(S)-N-(N-甲氧羰基-(L)-叔亮氨酰)氨基-6-苯基-2-氮杂己烷(式VII),而不需要分离其中形成的中间化合物,然后将其进一步转化为阿扎那韦或其硫酸盐。