申请人:JAPAN TOBACCO INC.
公开号:EP0569598A1
公开(公告)日:1993-11-18
A benzoxazinone derivative represented by general formula (I) or a pharmaceutically acceptable acid addition salt thereof, and an anti-inflammatory, a neutrophil infiltration inhibitor and a serine protease inhibitor each containing the derivative as an active ingredient, wherein R, R¹, R² and R³ may be the same or different from one another and each represents hydrogen or lower alkyl; A represents optionally halogenated phenyl, heterocycle or adamantyl; B represents hydrogen or optionally halogenated phenyl or heterocycle; U represents =CH-, =C= or =N-; V represents - O-, -CH₂-, =N-, -NH-, -CH= or a single bond; X represents -O-, =CH-, -CH₂- or a single bond; Y represents - CH₂-, -NH-, -O- or a single bond; Z represents -CO- or -CH₂-; and l represents an integer of 0 to 3. This compound has excellent activities of inhibiting serine protease, neutrotaxis, and infiltration of neutrophils into carragheenin-induced pneumocephalus.
通式(I)代表的苯并恶嗪酮衍生物或其药学上可接受的酸加成盐,以及含有该衍生物作为活性成分的消炎药、中性粒细胞浸润抑制剂和丝氨酸蛋白酶抑制剂,其中R、R¹、R²和R³可以相同或彼此不同,各自代表氢或低级烷基;A 代表可选的卤代苯基、杂环或金刚烷基; B 代表氢或可选的卤代苯基或杂环; U 代表 =CH-、=C= 或 =N-;V 代表-O-、-CH₂-、=N-、-NH-、-CH= 或单键; X 代表-O-、=CH-、-CH₂- 或单键; Y 代表-CH₂-、-NH-、-O- 或单键; Z 代表-CO- 或-CH₂-; l 代表 0 至 3 的整数。该化合物在抑制丝氨酸蛋白酶、中性粒细胞减少和中性粒细胞浸润卡拉盖宁诱导的肺炎方面具有优异的活性。