申请人:The United States of America as represented by the Department of Health
公开号:US05861405A1
公开(公告)日:1999-01-19
The present invention provides 8-substituted 1,3,7-trialkylxanthines useful as A.sub.2 -selective adenosine receptor antagonists and compositions comprising such compounds. Examples of the 8-substituted 1,3,7-trialkyl xanthines include: ##STR1## In compound (a), R.sub.1, R.sub.3, and R.sub.7 are methyl and X is one to three substituents, which may be the same or different and selected from the group consisting of amino, C.sub.1 -C.sub.4 alkylcarbonylamino, carboxy C.sub.2 -C.sub.4 alkylcarbonylamino, halo, C.sub.1 -C.sub.3 alkyloxy, amino C.sub.1 -C.sub.4 alkyloxy, C.sub.1 -C.sub.4 alkyloxy carbonylamino, amino C.sub.1 -C.sub.4 alkenyloxy, isothiocyanato, and diazonium tetrafluoroborate. In compound (b), R.sub.1, R.sub.3, and R.sub.7 are methyl, R.sub..beta. is hydrogen or methyl, and X is selected from the group consisting of R, C(.dbd.O)OR, and C(.dbd.O)NH--R, wherein R is a C.sub.1 -C.sub.6 alkyl.
本发明提供8-取代的1,3,7-三烷基黄嘌呤,作为A.sub.2-选择性的腺苷受体拮抗剂,以及包含此类化合物的组合物。8-取代的1,3,7-三烷基黄嘌呤的例子包括:##STR1## 在化合物(a)中,R.sub.1、R.sub.3和R.sub.7是甲基,X是一个到三个取代基,可以是相同的或不同的,选自包括氨基、C.sub.1-C.sub.4烷基碳酰胺基、羧基C.sub.2-C.sub.4烷基碳酰胺基、卤素、C.sub.1-C.sub.3烷氧基、氨基C.sub.1-C.sub.4烷氧基、C.sub.1-C.sub.4烷氧基碳酰胺基、氨基C.sub.1-C.sub.4烯丙氧基、异硫氰酸酯和重氮四氟硼酸的组。在化合物(b)中,R.sub.1、R.sub.3和R.sub.7是甲基,R.sub.β是氢或甲基,X选自R、C(.dbd.O)OR和C(.dbd.O)NH--R的组,其中R是C.sub.1-C.sub.6烷基。