(19)
(11) EP 1 799 675 A1

(12)

(43) Date of publication:
27.06.2007 Bulletin 2007/26

(21) Application number: 05738703.7

(22) Date of filing: 21.04.2005
(51) International Patent Classification (IPC): 
C07D 413/06(2006.01)
(86) International application number:
PCT/US2005/013593
(87) International publication number:
WO 2005/105792 (10.11.2005 Gazette 2005/45)
(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 MC NL PL PT RO SE SI SK TR

(30) Priority: 22.04.2004 IN CH03682004
24.08.2004 US 604166 P

(71) Applicants:
  • Dr. Reddy's Laboratories Ltd.
    Hyderabad 500 016 (IN)
  • Dr. Reddy's Laboratories, Inc.
    Bridgewater, NJ 08807 (US)

(72) Inventors:
  • AMINUL, Islam
    College Road, Dhubri 783 324 Assam (IN)
  • CHANDAN, Bhar
    Hooghly District 712 136, West Bengal (IN)
  • SAHADEV, K., S/o KATAM GURUVAIAH A-8, Lakshmipuri
    Hyderabad 500 062, Andhra Pradesh (IN)
  • MOTHUKURI, Vivekananda, Reddy
    Hyderabad, Andhra Pradesh 500 035 (IN)

(74) Representative: Bates, Philip Ian 
Reddie & Grose 16 Theobalds Road
London WC1X 8PL
London WC1X 8PL (GB)

   


(54) PROCESS FOR PREPARING OPTICALLY PURE ZOLMITRIPTAN