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(11)

EP 1 664 008 A1

(12)

(43) Date of publication: 07.06.2006 Bulletin 2006/23 (21) Application number: 04769193.6 (22) Date of filing: 27.08.2004

(51) International Patent Classification (IPC):  C07D 295/12(1985.01) A61P 5/50(2000.01) A61K 31/4453(2000.01) (86) International application number: PCT/IB2004/002776 (87) International publication number: WO 2005/021524 (10.03.2005 Gazette 2005/10)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR Designated Extension States: AL HR LT LV MK (30) Priority: 28.08.2003 IN DE10492003 (71) Applicant: Ranbaxy Laboratories Limited Gurgaon, Haryana 122001 (IN)	(72) Inventors: KUMAR, Yatendra Gurgaon, Haryana 122001 (IN) RAY, Purna Chandra New Delhi 100070 (IN) BABU, Jayachandra Suresh Gurgaon, Haryana 122001 (IN) (74) Representative: Gilholm, Stephen Philip et al Ranbaxy Laboratories Limited Intellectual Property Department 20 Balderton Street London W1K 6TL London W1K 6TL (GB)