Benzofuran derivatives, processes for preparing the same and antihypertensive agents containing the same
申请人:KAKEN PHARMACEUTICAL CO., LTD.
公开号:EP0156331A2
公开(公告)日:1985-10-02
A [2-hydroxy-3-(4-phenylpiperazinyl)propoxy) benzofuran derivative having the formula (I):
wherein X is acetyl, carbamoyl, cyano, a lower alkoxycarbonyl, carboxyl or 1-hydroxyethyl group, R is hydrogen atom, a lower alkoxy group, a lower alkyl group or a halogen atom;. R is attached to an arbitrary position of ortho-position, meta-position and para-position to N-phenyl group, and a group having the formula:
is attached to an arbitrary position of 4, 5, 6 and 7 positions to benzofuran ring orthe salt thereof, a process for preparing the same and an antihypertensive agent containing the same as an effective component. The benzofuran derivative has a strong a-adrenergic blockade effect and calcium antagonistic effect with a more decreased side-effect.
一种具有式(I)的[2-羟基-3-(4-苯基哌嗪基)丙氧基]苯并呋喃衍生物:
其中 X 为乙酰基、氨基甲酰基、氰基、低级烷氧基羰基、羧基或 1-羟乙基,R 为氢原子、低级烷氧基、低级烷基或卤素原子。R 连接在 N-苯基的正位、偏位和对位的任意位置上,以及一个具有以下式子的基团:
的基团连接在苯并呋喃环或其盐的 4、5、6 和 7 位的任意位置上,以及制备该衍生物的工艺和含有该衍生物作为有效成分的降压药。苯并呋喃衍生物具有较强的肾上腺素能阻断作用和钙离子拮抗作用,副作用较小。