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(11)

EP 1 620 388 A1

(12)

(43) Date of publication: 01.02.2006 Bulletin 2006/05 (21) Application number: 04728848.5 (22) Date of filing: 22.04.2004

(51) International Patent Classification (IPC):  C07C 211/29(1990.01) (86) International application number: PCT/GB2004/001709 (87) International publication number: WO 2004/099119 (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 (30) Priority: 06.05.2003 GB 0310361 (71) Applicant: Cipla Ltd. Mumbai 400 008 (IN)	(72) Inventors: RAO, Dharmaraj, Ramachandra Mumbai 400 601, Maharashtra (IN) KANKAN, Rajendra, Narayanrao Mumbai 400 084, Maharashtra (IN) (74) Representative: Curtis, Philip Anthony et al A.A. Thornton & Co. 235 High Holborn GB-London WC1V 7LE GB-London WC1V 7LE (GB)