Anti-rheumatic naphthyridine derivatives

• Main Authors: MICHAEL SPOWAGE, IAN MICHAEL HUNNEYBALL, JOHN GARETH BOWEN, MALCOLM JOHN CROSSLEY, BRUCE WILLIAM LESLIE, THOMAS KERR MILLER, BERNARD JOHN ARMITAGE
• Format: Patent
• Language: English
• Published: 28.07.1993
• Edition: 5
• Subjects: CHEMISTRY; HETEROCYCLIC COMPOUNDS; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE; METALLURGY; ORGANIC CHEMISTRY; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES; SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS

PCT No. PCT/EP92/02901 Sec. 371 Date Jun. 3, 1994 Sec. 102(e) Date Jun. 3, 1994 PCT Filed Oct. 12, 1992 PCT Pub. No. WO93/13097 PCT Pub. Date Jul. 8, 1993.This invention relates to compounds of formula I and pharmaceutically acceptable salts thereof kyl, hydroxy, carboxyalkenyl, alkoxycarbonyalkenyl, hydroxyalkyl, carboxyalkyl, alkoxycarbonylalkyl, alkoxy, halogenated alkyl, carboxy alkoxycarbonyl or alkanoylamino; R2 represents hydrogen, halo, alkoxy, hydroxy, alkanoyloxy, or phenoxy; R3 represents hydrogen or alkyl; R4 represents hydrogen, halo, alkoxycarbonyl, a benzyloxycarbonyl, alkanoyl, benzoyl, carbamoyl, alkyl, carboxy, hydroxyalkyl or alkylthio; R5 represents hydrogen or alkyl; R6 represents hydrogen, alkyl [optionally substituted by one or more of the following: hydroxy, halo or an amino group of formula -NR12R13], a C3-12 alicyclic hydrocarbon group, phenyl, (cycloalkyl)alkyl or benzyl; R7 represents hydrogen, halo, trifluoromethyl, trifluoromethoxy, alkyl, carboxy, or alkoxy; R8 represents hydrogen, halo, trifluoromethyl, trifluoromethoxy, alkyl or alkoxy; and R9 represents hydrogen or alkyl; which are antirheumatic agents. Compositions containing these compounds and processes to make them are also disclosed.