(19)

(11)

EP 0 800 667 A1

(12)

(43) Date of publication: 15.10.1997 Bulletin 1997/42 (21) Application number: 95939343.0 (22) Date of filing: 07.12.1995

(51) International Patent Classification (IPC):  C07C 323/ 62( . ) G03G 9/ 097( . ) C07D 213/ 80( . ) (86) International application number: PCT/GB1995/002853 (87) International publication number: WO 1996/020437 (04.07.1996 Gazette 1996/30)

(84) Designated Contracting States: DE FR GB NL (30) Priority: 28.12.1994 GB 19940026293 (71) Applicant: ZENECA LIMITED London W1Y 6LN (GB)	(72) Inventors: CAMPBELL, James, Stanley Manchester M45 6TX (GB) GREGORY, Peter Bolton BL3 4UN (GB) (74) Representative: Kirk, Martin John  Intelectual Property Group, Zeneca Specialties, P.O. Box 42, Hexagon House, Blackley, Manchester M9 8ZS Blackley, Manchester M9 8ZS (GB)