| abstract |
Pyrimido[5,4-d]pyrimidines of the general formula which have an inhibitory effect on signal transduction mediated by tyrosine kinases, their use for the treatment of oncoses, and their preparation. Exemplary compounds are: (a) 4-(5-indolylamino)-6-morpholinopyrimido[5,4-d]pyrimidine; (b) 4-(5-indolylamino)-6-[trans-(4-hydroxycyclohexyl)amino]pyrimido[5,4-d]pyrimidine; (c) 4-[(3-chloro-4-fluorophenyl)amino]-6-[4-(morpholinocarbonylmethyl)-1-piperazinyl]pyrimido[5,4-d]pyrimidine; (d) 4-[(3-chloro-4-fluorophenyl)amino]-6-[(4-morpholinyl)amino]pyrimido[5,4-d]pyrimidine; (e) 4-[(3-chloro-4-fluorophenyl)amino]-6-(4-picolylamino)pyrimido[5,4-d]pyrimidine; (f) 4-[(3-chloro-4-fluorophenyl)amino]-6-[1-trifluoroacetyl-4-piperidinylamino]pyrimido[5,4-d]pyrimidine; (g) 4-[(3-chloro-4-fluorophenyl)amino]-6-(endo-tropinylamino)pyrimido[5,4-d]pyrimidine; and, (h) 4-[(3-chloro-4-fluorophenyl)amino]-6-(exo-tropinylamino)pyrimido[5,4-d]pyrimidine. |