(19)

(11)

EP 0 135 545 A1

(12)

(43) Date of publication: 03.04.1985 Bulletin 1985/14 (21) Application number: 84900862.0 (22) Date of filing: 17.02.1984

(51) International Patent Classification (IPC):  C07D 307/ 79( . ) C07D 451/ 02( . ) C07D 451/ 14( . ) C07D 311/ 74( . ) C07D 451/ 04( . ) (86) International application number: PCT/GB1984/000047 (87) International publication number: WO 1984/003281 (30.08.1984 Gazette 1984/21)

(84) Designated Contracting States: CH DE FR GB LI NL (30) Priority: 19.02.1983 GB 19830004648 26.10.1983 GB 19830028550 (71) Applicant: BEECHAM GROUP PLC Brentford Middlesex TW8 9BD (GB)	(72) Inventor: SUMMERS, Christine Sturmer, Essex CB9 7XF (GB)