FIELD: pharmaceutical chemistry.
SUBSTANCE: invention relates to method for production of acetylamidiniophenylalanylcyclohexylglycilpypidinioalanin amides of formula I 
, wherein X anions are physiologically acceptable anions, and analogous thereof. Said compounds are effective inhibitors of fibrillation factor Xa and are useful, for example, in prevention of thrombosis. Claimed method includes coupling of 2-[2-acetylamino-3-(4-amidinophenyl)-propionylamino]-2-cyclohexylacetic acid, obtained from 2-[2-acetylamino-3-(4-cyanophenyl)acryloylamino]-2-cyclohexylacetic acid by assimetric hydration and converting of cyano group to amidine, or salt thereof with 3-(2-amino-2-carbamoylethyl)-1-methylpyridinic acid or salt thereof. Also are disclosed starting materials and intermediated used in this method, process for production the same and acetyl-(S)-4-amidiniophenylalanyl-(S)- cyclohexylglycil-(S)-(1-methyl-3-pypidinio)alanin amide in form of ditosylate.
EFFECT: simplified method; increased commercial availability of compounds with applicable anion.
14 cl, 16 ex
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