New Benzazole compounds, processes for the preparation thereof and pharmaceutical composition comprising the same
申请人:FUJISAWA PHARMACEUTICAL CO., LTD.
公开号:EP0356234A2
公开(公告)日:1990-02-28
A compound of the formula :
wherein
R¹ is aryl or a heterocyclic group, each of which may have suitable substituent(s),
R² is hydroxy, mercapto, lower alkylthio, sulfo, lower alkyl, amino or substituted amino,
R³ is hydrogen, halogen or lower alkoxy,
A is lower alkenylene, lower alkylene optionally substituted with hydroxy, or a group of the formula :
-A′-Q-A˝-,
in which A′ is lower alkylene, A˝ is lower alkylene or a single bond, and Q is O or S, and
X is O, S, NH or N-R⁴, in which R⁴ is lower alkyl,
and a pharmaceutically acceptable salt thereof.
A process for preparing the benzazole compounds is also described, together with a pharmaceutical composition comprising the same as an active ingredient.
The compounds exhibit anti-ulcer activity and H2 - receptor antagonism, and are therfore useful in the treatment of, for example, gastritis, ulcers, zollinger-ellison syndrome, oesophagitis and upper gastrointestinal bleeding.
式中的化合物
其中
R¹ 是芳基或杂环基团,每个芳基或杂环基团可有适当的取代基、
R² 是羟基、巯基、低级烷硫基、磺基、低级烷基、氨基或取代氨基、
R³ 是氢、卤素或低级烷氧基、
A 是低级烯基、任选被羟基取代的低级烯基或式中的一个基团:
-A′-Q-A˝-、
其中 A′是低级亚烷基,A˝是低级亚烷基或单键,Q 是 O 或 S,以及
X 是 O、S、NH 或 N-R⁴,其中 R⁴ 是低级烷基、
及其药学上可接受的盐。
此外,还描述了制备苯甲唑化合物的工艺,以及包含苯甲唑化合物作为活性成分的药物组合物。
这些化合物具有抗溃疡活性和 H2 受体拮抗作用,因此可用于治疗胃炎、溃疡、卓-艾综合征、食道炎和上消化道出血等疾病。