Heterocyclic compounds and antitumor agent containing the same as active ingredient

摘要

Heterocyclic compounds in which s-triazine or pyrimidine is substituted with benzimidazole and morpholine and which are represented by the Formula I or phermaceutically acceptable acid addition salts thereof: wherein X and Y respectively represent nitrogen atom or one of them represents nitrogen atom and the other represents C-R7 wherein R7 represents hydrogen or halogen atom; R1, R2, R4, R5 and R6 represent hydrogen atom or C1-C6 alkyl; R3 represents morpholino, piperidino, piperazinyl, thiomorpholino, benzimidazolyl, cyano or the like.