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EP 2 094 665 A2

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(88) Date of publication A3: 10.07.2008 (43) Date of publication: 02.09.2009 Bulletin 2009/36 (21) Application number: 07844907.1 (22) Date of filing: 06.11.2007

(51) International Patent Classification (IPC):  C07D 215/18(2006.01) A61K 31/47(2006.01) A01N 43/42(2006.01) (86) International application number: PCT/US2007/083756 (87) International publication number: WO 2008/058118 (15.05.2008 Gazette 2008/20)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR (30) Priority: 06.11.2006 IN CH20422006 22.01.2007 IN CH01422007 16.02.2007 US 890215 P 30.04.2007 US 914862 P (71) Applicants: Dr. Reddy's Laboratories Ltd. Hyderabad 500 016 (IN) Dr. Reddy's Laboratories, Inc. Bridgewater, NJ 08807 (US)

(72) Inventors: PADI, Pratap, Reddy Hyderabad 500 076, Andhra Pradesh (IN) BOLLIKONDA, Satyanarayana Hyderabad 500 050, Andra Pradesh (IN) NAIDU, Narsimha Hyderabad 500 038, Andhra Pradesh (IN) GHOSH, Debasish Hyderabad, Andhra Pradesh (IN) VENKATA KANDIRELLI, Kiran Kumar Hyderabad 500 054, Andhra Pradesh (IN) JINNA, Rajender Reddy Hyderabad 500 068, Andhra Pradesh (IN) KASTURI, Ravi Kumar Hyderabad 500 072, Andhra Pradesh (IN) MOHANARANGAM, Saravanan Villupuram 605 108, Tamil Nadu (IN) (74) Representative: Müller-Boré & Partner Patentanwälte  Grafinger Strasse 2 81671 München 81671 München (DE)