申请人:NIPPON CHEMIPHAR CO., LTD.
公开号:EP0794178A1
公开(公告)日:1997-09-10
The present invention provides a new compound which shows slow and continuous blood pressure reducing action and is useful as an antihypertensive agent.
The invention resides in a quinazoline derivative of the following formula (I) and its pharmaceutically acceptable salt:
in which, each of R1 and R2 is H or an alkyl group of 1 to 6 carbon atoms, or R1 and R2 are combined to form an ethylene group; each of R3 and R4 is an alkyl group of 1 to 6 carbon atoms; R5 is a hydrogen atom, a hydroxyl group, an alkyl group of 1 to 6 carbon atoms, or an alkoxy group of 1 to 6 carbon atoms; each of R6 and R7 is a hydrogen atom or an alkyl group of 1 to 6 carbon atoms; and n is 2 or 3. The invention further resides in an antihypertensive agent containing the above compound.
本发明提供了一种新化合物,它具有缓慢而持续的降压作用,可用作降压药。
本发明涉及下式(I)的喹唑啉衍生物及其药学上可接受的盐:
其中,R1 和 R2 各为 H 或 1 至 6 个碳原子的烷基,或 R1 和 R2 结合形成乙烯基;R3 和 R4 各为 1 至 6 个碳原子的烷基;R5 为氢原子、羟基、1 至 6 个碳原子的烷基或 1 至 6 个碳原子的烷氧基;R6 和 R7 各为氢原子或 1 至 6 个碳原子的烷基;n 为 2 或 3。本发明进一步涉及一种含有上述化合物的降压药。