Process for preparing 3-acylaminobenzofuran-2-carboxylic...

C - Chemistry – Metallurgy – 07 – D

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C07D 405/12 (2006.01) C07C 209/04 (2006.01) C07C 227/16 (2006.01) C07C 253/14 (2006.01) C07D 213/73 (2006.01) C07D 307/85 (2006.01) C07D 405/14 (2006.01) C07D 491/048 (2006.01) C07C 61/08 (2006.01) C07C 211/45 (2006.01) C07C 229/48 (2006.01) C07C 255/50 (2006.01)

Patent

CA 2672071

A process of preparing a compound of the formula [I]: (see above formula) wherein X is a group of the formula: -N= or -CH=; R1 is a hydrogen atom, a halogen atom, a lower alkyl group, a lower alkoxy group, a cyano group or an amino group optionally substituted by a lower alkyl group; Ring A is a nitrogen-containing heterocyclic group; Ring B is an optionally substituted benzene ring or an optionally substituted pyridine ring; and R3 is a hydrogen atom or a lower alkyl group, or a pharmaceutically acceptable salt thereof, which is useful as an inhibitor of activated blood coagulation factor X.

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