申请人:——
公开号:US20040068002A1
公开(公告)日:2004-04-08
This invention relates to benzopyran derivatives of the formula (I) wherein, R
1
and R
2
represent each independently a C
1-6
alkyl group, etc, R
3
represents a hydroxyl group, etc, R
4
represents a hydrogen atom, etc, R
6
represents a hydrogen atom, R
7
represents a hydrogen atom, etc, X is absent, or represents C═O, etc, R
8
represents a hydrogen atom, a C
1-6
alkyl group, etc, R
9
represents a hydrogen atom or a nitro group, when R
9
represents a nitro group, Y represents a C
4-8
alkylene group, —(CH
2
)
m
—CR
11
R
12
—(CH
2
)
n
— or —(CH
2
)
o
—O—(CH
2
)
p
—, R
5
represents a hydrogen atom, an amino group, a C
1-6
alkoxy group, a C
1-6
alkylthio group, a C
1-6
alkylamino group, a C
1-6
alkoxycarbonylamino group, etc, or pharmaceutically acceptable salts thereof. These compounds are useful as an antiarrhythmic agent.
本发明涉及式 (I) 的苯并吡喃衍生物,其中,R
1
和 R
2
各自独立地代表一个 C
1-6
烷基等,R
3
代表羟基等,R
4
代表氢原子等,R
6
代表氢原子,R
7
代表氢原子等,X 不存在,或代表 C═O 等,R
8
代表氢原子、C
1-6
烷基等
9
代表氢原子或硝基,当 R
9
代表硝基时,Y 代表 C
4-8
烯基、-(CH
2
)
m
-CR
11
R
12
-(CH
2
)
n
- 或-(CH
2
)
o
-O-(CH
2
)
p
-, R
5
代表氢原子、氨基、C
1-6
烷氧基
1-6
烷硫基、C
1-6
烷基氨基、一个 C
1-6
烷氧羰基氨基等,或其药学上可接受的盐类。这些化合物可用作抗心律失常药物。