(19)

(11)

EP 2 598 510 A2

(12)

(88) Date of publication A3: 19.04.2012 (43) Date of publication: 05.06.2013 Bulletin 2013/23 (21) Application number: 11813250.5 (22) Date of filing: 29.07.2011

(51) International Patent Classification (IPC):  C07F 9/6571(2006.01) C07C 45/50(2006.01) C07C 67/313(2006.01) B01J 31/18(2006.01) C07C 253/30(2006.01) (86) International application number: PCT/US2011/045897 (87) International publication number: WO 2012/016147 (02.02.2012 Gazette 2012/05)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 30.07.2010 US 369238 P (71) Applicants: Dr. Reddy's Laboratories Ltd. 500 034 Andhra Pradesh (IN) Dr. Reddy's Laboratories Inc. Bridgewater, NJ 08807 (US)	(72) Inventors: COBLEY, Christopher James Histon Cambridgeshire CB24 9JU (GB) NOONAN, Gary Scotland Fife KYI68AB (GB) CLARKE, Matthew KY16 8SN (GB) (74) Representative: Müller-Boré & Partner Patentanwälte  Grafinger Straße 2 81671 München 81671 München (DE)