(19)

(11)

EP 0 137 794 A1

(12)

(43) Date of publication: 24.04.1985 Bulletin 1985/17 (21) Application number: 84900634.0 (22) Date of filing: 08.02.1984

(51) International Patent Classification (IPC):  C07D 503/ 00( . ) C07F 7/ 18( . ) (86) International application number: PCT/GB1984/000034 (87) International publication number: WO 1984/003282 (30.08.1984 Gazette 1984/21)

(84) Designated Contracting States: CH DE FR GB LI NL (30) Priority: 23.02.1983 GB 19830004954 17.09.1983 GB 19830024961 (71) Applicant: BEECHAM GROUP PLC Brentford Middlesex TW8 9BD (GB)	(72) Inventors: HARBRIDGE, John, Barry Redhill, Surrey (GB) STIRLING, Irene Reigate, Surrey (GB) BRUTON, Gordon Croydon, Surrey (GB) (74) Representative: Greaves, Carol Pauline  Beecham Pharmaceuticals Great Burgh Yew Tree Bottom Road Epsom Surrey KT18 5XQ Epsom Surrey KT18 5XQ (GB)