申请人:Kowa Company Limited
公开号:US04290954A1
公开(公告)日:1981-09-22
A tetrahydroxanthone derivative represented by the general formula: ##STR1## wherein R is a hydrogen atom, a hydroxyl, cyano, lower alkyl, lower alkoxy, lower acyloxy, benzoyloxy or tetrazolyl group, or ##STR2## (R.sub.3 is a hydrogen atom, R.sub.4 is a hydrogen atom, a phenyl group which may be optionally substituted, or a tetrazolyl group; or R.sub.3 and R.sub.4 commonly form a ring together with the adjacent nitrogen atom and another nitrogen atom or an oxygen atom); R.sub.1 is a hydrogen or halogen atom, a lower alkyl, cyano, carboxyl or tetrazolyl group, or ##STR3## (R.sub.5 is a hydrogen atom, R.sub.6 is a phenyl group which may be optionally substituted, or a tetrazolyl group; or R.sub.5 and R.sub.6 commonly form a ring together with the adjacent nitrogen atom and an oxygen atom); and R.sub.2 is a hydrogen or halogen atom, or a lower alkyl group; with the proviso that neither R nor R.sub.1 is a hydrogen atom; when R is --CONH.sub.2, R.sub.1 and R.sub.2 are not respectively a hydrogen atom nor a hydrogen or halogen atom, or a lower alkyl group; and R.sub.2 and R.sub.1 are not respectively a hydrogen atom nor a halogen atom or a lower alkyl group. Exhibits anti-allergic, anti-inflammatory, analgesic, inhibitory and asthma-treating activities.
一种四羟基黄酮衍生物,由以下通式表示:##STR1## 其中R为氢原子、羟基、氰基、较低烷基、较低烷氧基、较低酰氧基、苯甲酰氧基或四唑基团,或##STR2##(其中R.sub.3为氢原子,R.sub.4为氢原子、可能被取代的苯基团或四唑基团;或R.sub.3和R.sub.4与相邻的氮原子和另一个氮原子或氧原子共同形成环);R.sub.1为氢或卤原子、较低烷基、氰基、羧基或四唑基团,或##STR3##(其中R.sub.5为氢原子,R.sub.6为可能被取代的苯基团或四唑基团;或R.sub.5和R.sub.6与相邻的氮原子和氧原子共同形成环);R.sub.2为氢或卤原子,或较低烷基;但R和R.sub.1都不是氢原子;当R为--CONH.sub.2时,R.sub.1和R.sub.2分别不是氢原子或氢或卤原子,或较低烷基;而R.sub.2和R.sub.1分别不是氢原子或卤原子或较低烷基。具有抗过敏、抗炎、镇痛、抑制和治疗哮喘的活性。