According to this invention, there is provided an indole derivative having the general formula (I)
1
wherein A is an oxygen atom or a nitrogen atom which nitrogen atom is optionally substituted with an alkyl group, and (i) R
1
and R
2
each stand for a hydrogen atom or an alkyl group, independently, or (ii) R
1
and R
2
as taken together form a cycloalkyl group or an aromatic ring, or (iii) R
1
and R
2
as taken together form a heterocyclic ring, and R
3
is a hydrogen atom, a (C
1
-C
10
)alkyl group or others, R
4
is a substituted alkyl group and R
5
is a hydrogen atom, a halogen atom, an alkyl group or an alkoxy group and so on, as novel compounds by a novel chemical synthetic process. The indole derivative of formula (I) exhibits a useful chymase inhibitory activity.
根据本发明,提供了一种具有通式 (I) 的
吲哚衍
生物
1
其中 A 是氧原子或氮原子,氮原子任选被烷基取代,以及 (i) R
1
和 R
2
分别代表氢原子或烷基,或 (ii) R
1
和 R
2
共同形成一个环烷基或一个芳香环,或 (iii) R
1
和 R
2
共同形成一个杂环,而 R
3
是氢原子
1
-C
10
烷基或其他
4
是取代的烷基,R
5
是氢原子、卤素原子、烷基或烷氧基等,通过新型
化学合成工艺制成的新型化合物。式(I)的
吲哚衍
生物具有有效的糜
蛋白酶抑制活性。