(19)
(11) EP 1 689 755 A2

(12)

(88) Date of publication A3:
14.07.2005

(43) Date of publication:
16.08.2006 Bulletin 2006/33

(21) Application number: 04798757.3

(22) Date of filing: 01.11.2004
(51) International Patent Classification (IPC): 
C07D 501/00(2006.01)
 A61P 31/00(2006.01)
(86) International application number:
PCT/IB2004/003571
(87) International publication number:
WO 2005/044824 (19.05.2005 Gazette 2005/20)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LU MC NL PL PT RO SE SI SK TR

(30) Priority: 07.11.2003 IN DE13682003

(71) Applicant: Ranbaxy Laboratories Limited
Gurgaon, Haryana 122001 (IN)

(72) Inventors:
  • KUMAR, Yatendra
    122 001 Gurgaon, Haryana (IN)
  • PRASAD, Mohan
    122 001 Gurgaon, Haryana (IN)
  • SINGH, Kaptan, Flat No. B-02, Saket Enclave
    201 005 Uttar Pradesh (IN)
  • PRASAD, Ashok
    New Delhi 110070 (IN)
  • RICHHARIYA, Santosh
    470 002 Madhya Pradesh (IN)

(74) Representative: Cronin, Brian Harold John 
Cronin Intellectual Property Route de Clémenty 62
1260 Nyon
1260 Nyon (CH)

   


(54) PROCESSES FOR THE PREPARATION OF HIGHLY PURE 3-(2-SUBSTITUTED VINYL) CEPHALOSPORIN