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    • 7. 发明授权
    • 6-thioxanthines
    • 6-硫代黄嘌呤
    • US4925847A
    • 1990-05-15
    • US78545
    • 1987-07-28
    • Peter Hofer
    • Peter Hofer
    • A61K31/52A61K31/522A61P11/08C07D473/22
    • C07D473/22
    • A 6-thioxanthine of general formula I or a pharmaceutically acceptable salt thereof ##STR1## wherein R.sub.3 is a C.sub.2 to C.sub.6 alkyl, a C.sub.3 to C.sub.7 cycloalkyl group or a C.sub.4 to C.sub.8 cycloalkylalkyl group and R.sub.8 is a C.sub.1 to C.sub.6 alkyl, a C.sub.3 to C.sub.7 cycloalkyl group or a C.sub.4 to C.sub.8 cycloalkylalkyl group provided that when R.sub.3 is an ethyl, n-propyl or n-butyl group, R.sub.8 is a C.sub.3 to C.sub.6 alkyl, a C.sub.3 to C.sub.7 cycloalkyl group or a C.sub.4 to C.sub.8 cycloalkylalkyl group.These 3,8-disubstituted-6-thioxanthines have enhanced bronchodilator activity.
    • 通式I的6-硫代黄嘌呤或其药学上可接受的盐,其中R 3为C 2至C 6烷基,C 3至C 7环烷基或C 4至C 8环烷基烷基,R 8为C 1至C 6烷基, C3至C7环烷基或C4至C8环烷基烷基,条件是当R3为乙基,正丙基或正丁基时,R 8为C 3至C 6烷基,C 3至C 7环烷基或C 4至C 8环烷基烷基 。 这些3,8-二取代-6-硫代黄嘌呤具有增强的支气管扩张剂活性。