820232-33-5Relevant academic research and scientific papers
PROCESS FOR PRODUCING 3-ACYLAMINOBENZOFURAN-2-CARBOXYLIC ACID DERIVATIVE
-
Page/Page column 21, (2008/06/13)
The present invention provides a process of preparing a compound of the formula [I]: 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.
