申请人:John Wyeth & Brother Limited
公开号:US04975431A1
公开(公告)日:1990-12-04
The invention concerns compounds of formula I ##STR1## or a salt thereof, wherein R.sup.1 and R.sup.2 each independently represent hydrogen, lower alkyl, lower alkoxy, carboxyloweralkyl, carboxy, hydroxyloweralkyl, halogen, haloloweralkyl, lower alkoxycarbonyl, optionally substituted aryl or optionally substituted aralkyl, n represents an integer from 3 to 6; R.sup.3 represents hydrogen or single or multiple substitution on one or more of the aliphatic carbons by one or more substituents selected from lower alkyl, optionally substituted aryl and optionally substituted aralkyl; A represents a group of formula (i) or (ii) below: --CR.sup.4 R.sup.5 --(CR.sup.6 R.sup.7).sub.m -- (i) --CX--(CR.sup.6 R.sup.7).sub.m -- (ii) in which R.sup.4, R.sup.6 and R.sup.7 each independently represent hydrogen or lower alkyl (providing that when R.sup.5 is NH.sub.2, R.sup.4 is hydrogen); m is O or 1; R.sup.5 represents hydrogen, NH.sub.2, OH or loweralkoxy, and X is .dbd.O, .dbd.NH or .dbd.NOH, the attachment of A to B being from either end, and B represents a optionally substituted aryl or heteroaryl radical which compounds possess anti-inflammatory activity. Also disclosed is a process for preparing a useful intermediate to compounds of formula I.
本发明涉及I式化合物或其盐,其中R1和R2各自独立地表示氢,低级烷基,低级烷氧基,羧基低级烷基,羧基,羟基低级烷基,卤素,卤代低级烷基,低级氧代羰基,可选地取代的芳基或可选地取代的芳基烷基,n表示3到6的整数;R3表示氢或在一种或多种脂肪族碳上的单个或多个取代基,所述取代基选自低级烷基,可选地取代的芳基和可选地取代的芳基烷基;A表示以下式(i)或(ii)的基团:--CR4R5--(CR6R7)m--(i)--CX--(CR6R7)m--(ii)其中R4,R6和R7各自独立地表示氢或低级烷基(仅当R5为NH2时,R4为氢);m为O或1;R5表示氢,NH2,OH或低级氧代烷氧基,X为.dbd.O,.dbd.NH或.dbd.NOH,A与B的连接可从任一端开始,B表示可选地取代的芳基或杂环芳基基团,这些化合物具有抗炎活性。还公开了一种制备I式化合物有用中间体的方法。