(19)

(11)

EP 0 415 963 A1

(12)

(43) Date of publication: 13.03.1991 Bulletin 1991/11 (21) Application number: 89905455.0 (22) Date of filing: 05.05.1989

(51) International Patent Classification (IPC):  A62D 3/ 37( . ) C07D 487/ 22( . ) A62D 101/ 22( . ) C07C 17/ 23( . ) A62D 101/ 04( . ) (86) International application number: PCT/GB1989/000478 (87) International publication number: WO 1989/010772 (16.11.1989 Gazette 1989/27)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 09.05.1988 GB 19880010944 09.03.1989 GB 19890005423 (71) Applicant: The Public Health Laboratory Service Board London NW9 5EQ (GB)	(72) Inventors: MARKS, Trevor, Simon Salisbury Wiltshire SP5 2LX (GB) MAULE, Andrew Wiltshire SP4 7QJ (GB) (74) Representative: Lockwood, Peter Brian  Procurement Executive Ministry of Defence Patents 1 A (4) Room 2014, Empress State Building Lillie Road London SW6 1TR London SW6 1TR (GB)