(19)

(11)

EP 0 220 226 A1

(12)

(43) Date of publication: 06.05.1987 Bulletin 1987/19 (21) Application number: 86902450.0 (22) Date of filing: 11.04.1986

(51) International Patent Classification (IPC):  C07D 217/ 22( . ) C07D 491/ 056( . ) C07D 217/ 24( . ) (86) International application number: PCT/GB1986/000205 (87) International publication number: WO 1986/006068 (23.10.1986 Gazette 1986/23)

(84) Designated Contracting States: BE CH DE FR GB IT LI LU NL SE (30) Priority: 17.04.1985 GB 19850009834 (71) Applicant: BEECHAM GROUP PLC Brentford Middlesex TW8 9BD (GB)	(72) Inventors: MARKWELL, Roger, Edward 3 The Dell Essex CM6 1HW (GB) SMITH, Stephen, Allan 8 Broadleaf Avenue Hertfordshire CM23 4JY (GB)