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EP 1 701 937 A1

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(43) Date of publication: 20.09.2006 Bulletin 2006/38 (21) Application number: 03768046.9 (22) Date of filing: 29.12.2003

(51) International Patent Classification (IPC):  C07C 255/07(2006.01) (86) International application number: PCT/IB2003/006200 (87) International publication number: WO 2005/066117 (21.07.2005 Gazette 2005/29)

(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 PT RO SE SI SK TR (71) Applicants: Wockhardt Limited Mumbai 400 051, Maharashtra (IN) Jaweed Mukarram, Siddiqui Mohammed Aurangabad 431 210 (Maharashtra) (IN) Khan, Rashid Abdul Rehman Aurangabad 431 210 (Maharashtra) (IN) Yavad, Ram Prasad Aurangabad 431 210 (Maharashtra) (IN) Shaikh, Zakir Gafoor Aurangabad 431 210 MAH (IN)

(72) Inventors: JAWEED MUKARRAM, Siddiqui Mohammed, Wockhardt Ltd Aurangabad 431 210 (Marashtra) (IN) KHAN, Rashid Abdul Rehman, Wockhardt Ltd. Aurangabad 431 210 (Marashtra) (IN) YADAV, Ram Prasad, Wockhardt Ltd. Aurangabad 431 210 (Marashtra) (IN) SHAIKH, Zakir Gafoor, Wockhardt Ltd. Aurangabad 431 210 (Marashtra) (IN) (74) Representative: Kuhnen, Rainer-Andreas et al KUHNEN & WACKER Patent- und Rechtsanwaltsbüro Prinz-Ludwig-Strasse 40A 85354 Freising 85354 Freising (DE)