Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
Heterocyclic compounds and antitumor agent containing the same as active ingredient
 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: ##STR1## PA1 wherein X and Y respectively represent nitrogen atom or one of them represents nitrogen atom and the other represents C--R.sub.7 wherein R.sub.7 represents hydrogen or halogen atom; R.sub.1, R.sub.2, R.sub.4, R.sub.5 and R.sub.6 represent hydrogen atom or C.sub.1 -C.sub.6 alkyl; R.sub.3 represents morpholino, piperidino, piperazinyl, thiomorpholino, benzimidazolyl, cyano or the like. 
Zenyaku Kogyo Kabushiki Kaisha
C C C C C A
C07D C07D C07D C07D C07D A61P
inventional inventional inventional inventional inventional inventional
Shinichi Masahiro Toshiyuki Seiichiro Tetsuo
Yaguchi Inaba Matsuno Kawashima Watanabe