(19)

(11)

EP 2 705 021 A2

(12)

(88) Date of publication A3: 21.03.2013 (43) Date of publication: 12.03.2014 Bulletin 2014/11 (21) Application number: 12766333.4 (22) Date of filing: 04.05.2012

(51) International Patent Classification (IPC):  C07C 211/42(2006.01) C07C 309/35(2006.01) C07C 309/29(2006.01) (86) International application number: PCT/IN2012/000329 (87) International publication number: WO 2012/153349 (15.11.2012 Gazette 2012/46)

(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: 04.05.2011 IN MM13822011 09.11.2011 IN MM31692011 (71) Applicant: Cadila Healthcare Limited Ahmedabad 380 015, Gujarat (IN)	(72) Inventors: DWIVEDI, Shriprakash, Dhar Ahmedabad 380015, Gujarat (IN) PRASAD, Ashok Ahmedabad 380015, Gujarat (IN) PATEL, Mayur, Ramnikbhai Ahmedabad 380015, Gujarat (IN) (74) Representative: Jones, Helen M.M.  Gill Jennings & Every LLP The Broadgate Tower 20 Primrose Street London EC2A 2ES London EC2A 2ES (GB)