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EP 2 346 867 A1

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(43) Date of publication: 27.07.2011 Bulletin 2011/30 (21) Application number: 09787255.0 (22) Date of filing: 19.09.2009

(51) International Patent Classification (IPC):  C07D 471/04(2006.01) A61P 11/00(2006.01) A61P 19/00(2006.01) A61P 31/00(2006.01) A61P 37/00(2006.01) C07D 519/00(2006.01) A61P 17/00(2006.01) A61P 25/00(2006.01) A61P 35/00(2006.01) (86) International application number: PCT/IB2009/054115 (87) International publication number: WO 2010/046791 (29.04.2010 Gazette 2010/17)

(84) Designated Contracting States: 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 SE SI SK SM TR Designated Extension States: AL BA RS (30) Priority: 19.09.2008 IN DE22052008 (71) Applicant: Ranbaxy Laboratories Limited Gurgaon 122 001 HR (IN)

(72) Inventors: RUDRA, Sonali 700106 Salt Lake Kolkata (IN) GUPTA, Nidhi 110018 New Delhi Delhi (IN) CHANDRAKANT, Kakade, Ganesh Ahmednagar Maharashtra 414102 (IN) JAIN, Tarun 201011 Gaziabad Uttar Pradesh (IN) VOLETI, Sreedhara, Rao Hyderabad, Andhra Pradesh 500056 (IN) RAY, Abhijit New Delhi Delhi 110070 (IN) DASTIDAR, Sunanda G. New Delhi Delhi 110076 (IN) VIJAYKRISHNAN, Lalitha New Delhi Delhi 110011 (IN) (74) Representative: Cronin, Brian Harold John  CRONIN Intellectual Property Chemin de Précossy 31 1260 Nyon 1260 Nyon (CH)