申请人:Nippon Zoki Pharmaceutical Co., Ltd.
公开号:US04046893A1
公开(公告)日:1977-09-06
Trioxopteridine derivatives of the formula ##STR1## , wherein R.sub.1 is a normal alkyl group having 0 to 6 hydroxyl groups and R.sub.2 is hydrogen or a normal lower alkyl group having 0 to 5 hydroxyl groups, are prepared by catalytically hydrogenating a 6-substituted-5-nitro-2,4-dioxopyrimidine to give a 6-substituted-5-amino-2,4-dioxopyrimidine, and then reacting the latter compound with a compound of the formula R.sub.2 --A--COOR.sub.3, wherein R.sub.3 is hydrogen, lower alkyl, an alkali metal or an alkaline earth metal and A is carbonyl or a group of the formula ##STR2## wherein R.sub.4 is lower alkyl. The resulting trioxopteridine derivatives have analgesic and antiphlogistic properties and are therefore useful as pharmaceutical medicaments.
本发明提供一种Trioxopteridine衍生物的制备方法,其化学式为##STR1##其中R.sub.1是0~6个羟基的正常烷基基团,R.sub.2为氢或0~5个羟基的正常低烷基基团。该方法通过催化氢化6-取代-5-硝基-2,4-二氧基嘧啶,得到6-取代-5-氨基-2,4-二氧基嘧啶,然后将后者与化合物R.sub.2-A-COOR.sub.3反应,其中R.sub.3是氢、低烷基、碱金属或碱土金属,A是羰基或式子##STR2##其中R.sub.4是低烷基。所得的Trioxopteridine衍生物具有镇痛和抗炎性能,因此可用作制药药物。