(19)

(11)

EP 1 626 954 A2

(12)

(88) Date of publication A3: 24.03.2005 (43) Date of publication: 22.02.2006 Bulletin 2006/08 (21) Application number: 04731224.4 (22) Date of filing: 05.05.2004

(51) International Patent Classification (IPC):  C07D 205/08(1985.01) (86) International application number: PCT/IB2004/001396 (87) International publication number: WO 2004/099132 (18.11.2004 Gazette 2004/47)

(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: 05.05.2003 IN DE06682003 (71) Applicant: RANBAXY LABORATORIES, LTD. New Delhi 110 019 (IN)

(72) Inventors: KAROOTI, Kiran Kumar Ganagakhedkar Shubham Hyderabad 500013, Andhra Pradesh (IN) RATHOD, Parendu Dhirajlal Gurgaon 122001, Haryana (IN) ARYAN, Ram Chander New Delhi 110070, Delhi (IN) KUMAR, Yatendra Gurgaon 122001, Haryana (IN) (74) Representative: Gilholm, Stephen Philip  Ranbaxy Laboratories Limited Intellectual Property Department 20 Balderton Street London, W1K 6TL 20 Balderton Street London, W1K 6TL (GB)