HETEROCYCLIC COMPOUND, PREPARATIVE METHOD AND USE OF THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a heterocyclic compound having a tyrosine kinase antagonism and a medicinal composition containing the same. SOLUTION: This compound or its salt is expressed by formula (I) [m is 1 or 2, R1 is a halogen atom or a (halogenated) 1-2C alkyl group, one of R2 and R3 is H and the other is a group expressed by formulas (II), (III) (n is 3 or 4, R4 is a 1-4C alkyl having 1-2 hydroxyl groups)].