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(11)

EP 2 773 618 A1

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(43) Date of publication: 10.09.2014 Bulletin 2014/37 (21) Application number: 12839179.4 (22) Date of filing: 02.11.2012

(51) International Patent Classification (IPC):  C07D 213/61(2006.01) (86) International application number: PCT/IN2012/000720 (87) International publication number: WO 2013/105106 (18.07.2013 Gazette 2013/29)

(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 Designated Extension States: BA ME (30) Priority: 03.11.2011 IN MM31012011 (71) Applicant: Cadila Healthcare Limited Ahmedabad 380 015, Gujarat (IN)

(72) Inventors: DWIVEDI, Shriprakash Dhar Ahmedabad - 380 015 Gujarat (IN) PATEL, Vipul Kantibhai Ahmedabad - 380 015 Gujarat (IN) PATEL, Mahesh Shankarbhai Ahmedabad - 380 015 Gujarat (IN) SHAH, Niraj Shyamlal Ahmedabad - 380 015 Gujarat (IN) PRASAD, Ashok Ahmedabad - 380 015 Gujarat (IN) JAIN, Kuldeep Natwarlal Ahmedabad - 380 015 Gujarat (IN) (74) Representative: Srinivasan, Ravi Chandran  J A Kemp 14 South Square Gray's Inn London WC1R 5JJ London WC1R 5JJ (GB)