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(11)

EP 1 494 674 A1

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(43) Date of publication: 12.01.2005 Bulletin 2005/02 (21) Application number: 02720343.9 (22) Date of filing: 08.04.2002

(51) International Patent Classification (IPC)7: A61K 31/495, C07D 295/13 (86) International application number: PCT/IB2002/001108 (87) International publication number: WO 2003/084541 (16.10.2003 Gazette 2003/42)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (71) Applicant: Ranbaxy Laboratories Limited New Delhi 110 019 (IN)	(72) Inventors: SALMAN, Mohammad Gurgaon 122001 (IN) YADAV, Gyan Chand Ghaziabad 201001 (IN) SHARMA, Somesh New Delhi 110063 (IN) KAPKOTI, Gobind Singh Gurgaon 122001 (IN) CHUGH, Anita New Delhi 110012 (IN) GUPTA, Jang Bahadur Gurgaon 122001 (IN) ANAND, Nitya Lucknow 226007 (IN) (74) Representative: Gilholm, Stephen Philip  Ranbaxy Europe Limited,95 Park Lane London W1K 7TE London W1K 7TE (GB)