Process for the preparation of acetyl-amidiniophenylalanyl-cyclohexylglycyl-pyridinioalaninamides
申请人:——
公开号:US20010031858A1
公开(公告)日:2001-10-18
The present invention relates to a process for the preparation of acetyl-amidiniophenylalanyl-cyclohexylglycyl-pyridinioalaninamides of the formula I,
1
in which the anions X are physiologically acceptable anions, and their analogs, which are effective inhibitors of the blood coagulation factor Xa and which can be used, for example, for preventing thromboses. The process according to the invention comprises the coupling of 2-[2-acetylamino-3-(4-amidinophenyl)propionylamino]-2-cyclohexylacetic acid, which is obtained from 2-[2-acetylamino-3-(4-cyanophenyl)acryloylamino]-2-cyclohexylacetic acid by asymmetric hydrogenation and conversion of the cyano group into the amidine, or a salt thereof, with a 3-(2-amino-2-carbamoylethyl)-1-methylpyridinium salt or a salt thereof. The invention furthermore provides starting materials and intermediates for this process, processes for their preparation and acetyl-(S)-4-amidiniophenylalanyl-(S)-cyclohexylglycyl-(S)-(1-methyl-3-pyridinio)alaninamide as ditosylate salt.
本发明涉及一种制备公式I中的乙酰胺基苯甲酰-环己基甘氨酰-吡啶基丙氨酰酰胺的过程,其中阴离子X是生理上可接受的阴离子及其类似物,这些类似物是有效的血凝血因子Xa抑制剂,例如可用于预防血栓形成。本发明的方法包括将由不对称氢化和将腈基转化为胺基的2-[2-乙酰氨基-3-(4-胺基苯基)丙酰氨基]-2-环己基乙酸或其盐与3-(2-氨基-2-羧酰乙基)-1-甲基吡啶盐或其盐偶联。此外,本发明还提供了此过程的起始材料和中间体、其制备过程和乙酰-(S)-4-胺基苯甲酰-(S)-环己基甘氨酰-(S)-(1-甲基-3-吡啶基)丙氨酰胺的苄基磺酸盐。