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(11)

EP 1 613 760 A2

(12)

(88) Date of publication A3: 13.01.2005 (43) Date of publication: 11.01.2006 Bulletin 2006/02 (21) Application number: 04725114.5 (22) Date of filing: 01.04.2004

(51) International Patent Classification (IPC):  C12P 7/62(1980.01) C07C 67/00(1968.09) C12P 7/62(1980.01) C12P 17/06(1980.01) A61K 31/215(1985.01) C12R 1/465(1985.01) (86) International application number: PCT/IB2004/001003 (87) International publication number: WO 2004/087935 (14.10.2004 Gazette 2004/42)

(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: 01.04.2003 IN DE05592003 (71) Applicant: RANBAXY LABORATORIES, LTD. New Delhi 110 019 (IN)

(72) Inventors: KUMAR, Parveen Haryana 134112 (IN) KATIAL, Vikas Uttar Pradesh 201303 (IN) GIGRAS, P. Shri Jagdish Chander Jitender Kumar Uttar Pradesh 244001 (IN) KUMAR, Sudeep B-107 Alaknanda Apt. Uttar Pradesh 201011 (IN) SHUKLA, Aniruddha New Delhi 110070 (IN) (74) Representative: Gilholm, Stephen Philip  Ranbaxy Laboratories Limited Intellectual Property Department 20 Balderton Street London W1K 6TL London W1K 6TL (GB)