(19)

(11)

EP 2 758 407 A1

(12)

(43) Date of publication: 30.07.2014 Bulletin 2014/31 (21) Application number: 12784684.8 (22) Date of filing: 06.09.2012

(51) International Patent Classification (IPC):  C07D 501/18(2006.01) (86) International application number: PCT/IB2012/054602 (87) International publication number: WO 2013/041999 (28.03.2013 Gazette 2013/13)

(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: 20.09.2011 IN DE27182011 (71) Applicant: Dhanuka Laboratories Ltd. Gurgaon, Haryana 122002 (IN)	(72) Inventors: SINGH, Sandeep Gurgaon Haryana 122001 (IN) SRIVASTAVA, Alok Gurgaon Haryana 122001 (IN) DHANUKA, Manish Gurgaon Haryana 122001 (IN) (74) Representative: Bailey, Sam Rogerson  Mewburn Ellis LLP 33 Gutter Lane London EC2V 8AS London EC2V 8AS (GB)