Heterocyclic compounds their production and use

摘要

A compound represented by the formula:wherein m is 1 or 2, R<1 >is a halogen or an optionally halogenated C1-2 alkyl; one of R<2 >and R<3 >is a hydrogen atom and the other is a group represented by the formula:wherein n is 3 or 4; R<4 >is a C1-4 alkyl group substituted by 1 or 2 hydroxy groups, or a salt thereof shows tyrosine kinase-inhibiting activity.