| abstract |
Novel substituted 2-piperidino-4-amino-6,7-dimethoxy-quinazolines having the formulan wherein R is an alkyl containing 1 to 5 carbons, a cycloalkyl containing 3 to 7 carbons, benzyl, an alkoxy containing 1 to 5 carbons, benzyloxy, or a group -NR 1 R 2 , wherein R 1 or R 2 is hydrogen or a chained alkyl containing 4 to 5 carbons or wherein R 1 and R 2 , together with the nitrogen atom, form a cyclic amino group containing 3 to 7 carbons, which amino group may be substituted by one or two lower-alkyl groups, or their pharmaceutically acceptable salts. |