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    • 7. 发明授权
    • Condensed purine derivatives
    • 凝血嘌呤衍生物
    • US06306847B1
    • 2001-10-23
    • US09090936
    • 1998-06-05
    • Hiroshi TsumukiMayumi SakiHiromi NonakaMichio IchimuraJunichi ShimadaFumio SuzukiShunji IchikawaNobuo Kosaka
    • Hiroshi TsumukiMayumi SakiHiromi NonakaMichio IchimuraJunichi ShimadaFumio SuzukiShunji IchikawaNobuo Kosaka
    • C07D48714
    • C07D487/14
    • The present invention provides condensed purine derivatives or pharmacologically acceptable salts thereof exhibiting adenosine A3 acceptor antagonising activity, and having an antiasthmatic action, a bronchodilator action, an antiantiitching action, etc., and represented by the following formula (I): (wherein R1 represents substituted or unsubstituted aryl or a substituted or unsubstituted aromatic heterocyclic group; R2 represents hydrogen, lower alkyl, alicyclic alkyl, substituted or unsubstituted aralkyl, substituted or unsubstituted aryl, or a substituted or unsubstituted aromatic heterocyclic group; R3 represents hydrogen, lower alkyl, or substituted or unsubstituted aralkyl; X1 and X2 are the same or different and each represents hydrogen, lower alkyl, substituted or unsubstituted aralkyl, or substituted or unsubstituted aryl; and n represents an integer of 0 to 3).
    • 本发明提供具有腺苷A3受体拮抗活性的缩合嘌呤衍生物或其药理学上可接受的盐,并具有抗哮喘作用,支气管扩张剂作用,抗脱除作用等,并由下式(I)表示:(其中R1表示 取代或未取代的芳基或取代或未取代的芳族杂环基; R 2表示氢,低级烷基,脂环族烷基,取代或未取代的芳烷基,取代或未取代的芳基或取代或未取代的芳族杂环基; R 3表示氢,低级烷基或 取代或未取代的芳烷基; X 1和X 2相同或不同,各自表示氢,低级烷基,取代或未取代的芳烷基或取代或未取代的芳基; n表示0〜3的整数。