申请人:E. R. Squibb & Sons, Inc.
公开号:US03994893A1
公开(公告)日:1976-11-30
New 4-amino derivatives of pyrazolo[1,5-a]quinoxaline-3-carboxylic acid, esters and their salts have the formula ##SPC1## R.sub.1 is hydrogen, lower alkyl or a salt forming ion; R.sub.2 and R.sub.3 each is hydrogen, lower alkyl, cyclolower alkyl, phenyl, substituted phenyl, phenyl-lower alkylene, di-lower alkylamino-lower alkylene or R.sub.2 and R.sub.3 together with the nitrogen form an unsubstituted or substituted 5- or 6-membered nitrogen heterocyclic in which an additional nitrogen or oxygen may be present. R.sub.4 is hydrogen, lower alkyl or halogen. The new compounds are useful as anti-inflammatory agents.
新的4-氨基吡唑并[1,5-a]喹喔啉-3-羧酸衍生物,酯和它们的盐具有以下结构式: ##SPC1## 其中,R.sub.1为氢,低碳基或形成离子的盐;R.sub.2和R.sub.3分别为氢,低碳基,环低碳基,苯基,取代苯基,苯基-低碳亚基,二-低碳氨基-低碳亚基或R.sub.2和R.sub.3与氮一起形成未取代或取代的5-或6-成员的氮杂环,其中可能存在额外的氮或氧。R.sub.4为氢,低碳基或卤素。这些新化合物可用作抗炎剂。