(19)

(11)

EP 0 805 681 A1

(12)

(43) Date of publication: 12.11.1997 Bulletin 1997/46 (21) Application number: 96903618.0 (22) Date of filing: 19.01.1996

(51) International Patent Classification (IPC):  C07D 401/ 14( . ) C07D 413/ 14( . ) C07D 413/ 04( . ) (86) International application number: PCT/US1996/000850 (87) International publication number: WO 1996/022775 (01.08.1996 Gazette 1996/35)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU NL PT SE (30) Priority: 24.01.1995 US 19950378113 (71) Applicant: MERCK & CO., INC. Rahway, New Jersey 07065 (US)	(72) Inventors: WILLIAMS, Peter, D. Rahway, NJ 07065 (US) FREIDINGER, Roger, M. Rahway, NJ 07065 (US) (74) Representative: Cole, William Gwyn, et al  European Patent Department, Merck & Co., Inc., Terlings Park, Eastwick Road Harlow, Essex CM20 2QR Harlow, Essex CM20 2QR (GB)