METHOD FOR PREPARING 5-CHLORO-N-(METHYL)THIOPHEN-2-CARBOXAMIDE DERIVATIVE AND INTERMEDIATE USED THEREIN

摘要

Disclosed are: a method for preparing a 5-chloro-N-({(5S)-2-oxo-3-[4-(5,6-dihydro-4H-[1,2,4]triazin-1-yl)phenyl]-1,3-oxazolidin-5-yl}-methyl)thiophene-2-carboxamide derivative, which is a inhibitor of blood coagulation factor Xa, in a high purity and yield; and a novel intermedicate used therein.