申请人:E. R. Squibb & Sons, Inc.
公开号:US04077956A1
公开(公告)日:1978-03-07
New 5-substituted derivatives of dipyrazolo[1,5-a:4',3'-e]pyrazine-6-carboxylic acid, esters and their salts have the formula ##STR1## R.sup.1 is hydrogen, lower alkyl or phenyl-lower alkylene; R.sup.2 and R.sup.3 each is hydrogen or lower alkyl; X is oxygen or sulfur; and R.sup.4 is hydrogen, lower alkyl, phenyl-lower alkylene or amino-lower alkylene. The new compounds are useful as anti-inflammatory agents and immunosuppressive agents.
新的5-取代二嘧啶并[1,5-a:4',3'-e]吡嗪-6-羧酸衍生物,酯及其盐的化学式为
R.sup.1为氢、较低的烷基或苯基-较低的烷基;R.sup.2和R.sup.3分别为氢或较低的烷基;X为氧或硫;R.sup.4为氢、较低的烷基、苯基-较低的烷基或氨基-较低的烷基。这些新化合物可用作抗炎药和免疫抑制剂。