Novel substituted 2-piperidino-4-amino-6,7-dimethoxy-quinazolines having the formula
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 -NR1R2, wherein R1 or R2 is hydrogen or a chained alkyl containing 4 to 5 carbons or wherein R1 and R2, 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.
新型取代的 2-
哌啶基-
4-氨基-6,7-二甲氧基喹唑啉,其式如下
其中 R 是含 1 至 5 个
碳原子的烷基、含 3 至 7 个
碳原子的
环烷基、
苄基、含 1 至 5 个
碳原子的烷
氧基、苄
氧基或基团-NR1R2,其中 R1 或 R2 是
氢或含 4 至 5 个
碳原子的链状烷基,或 R1 和 R2 与
氮原子一起形成含 3 至 7 个
碳原子的环状
氨基,该
氨基可被一个或两个低级烷基取代,或它们的药学上可接受的盐。