申请人:Kyowa Hakko Kogyo Co., Ltd.
公开号:US05468756A1
公开(公告)日:1995-11-21
Disclosed are imidazonaphthyridine derivatives represented by formula (I) ##STR1## wherein: R.sup.1 represents lower alkyl or substituted or unsubstituted aryl; and X--Y--Z represents ##STR2## wherein R.sup.2 represents hydrogen, lower alkyl, alkenyl, aralkenyl, or --C (R.sup.5)H--(CH.sub.2).sub.n --R.sup.4 (wherein R.sup.4 represents substituted or unsubstituted aryl, substituted or unsubstituted pyridyl, substituted or unsubstituted furyl, hydroxy-substituted lower alkyl, lower alkanoyloxy, morpholino, lower alkanoyl, carboxy, lower alkoxycarbonyl, cycloalkyl, hydroxy, lower alkoxy, halogen or NR.sup.6 R.sup.7 wherein R.sup.6 and R.sup.7 independently represents hydrogen or lower alkyl; R.sup.5 represents hydrogen, lower alkyl, or phenyl; and n represents an integer of 0 to 3); and R.sup.3 represents hydrogen, mercapto, hydroxy, lower alkyl, or aryl and pharmaceutically acceptable salts thereof. The compounds show a potent anti-inflammatory, anti-allergic and broncho-dilative activity.
本发明涉及Imidazonaphthyridine衍生物,其表示为公式(I):##STR1##
其中:R1代表较低的烷基或取代或未取代的芳基;X-Y-Z表示##STR2##
其中R2代表氢、较低的烷基、烯基、芳基烯基或-C(R5)H-(CH2)n-R4(其中R4代表取代或未取代的芳基、取代或未取代的吡啶基、取代或未取代的呋喃基、羟基取代的较低烷基、较低烷酰氧基、吗啉基、较低烷酰基、羧基、较低烷氧羰基、环烷基、羟基、较低烷氧基、卤素或NR6R7,其中R6和R7独立地代表氢或较低的烷基;R5代表氢、较低的烷基或苯基;n表示0到3的整数);以及R3代表氢、巯基、羟基、较低的烷基或芳基以及其药学上可接受的盐。这些化合物表现出强大的抗炎、抗过敏和支气管扩张活性。