(19)
(11) EP 1 945 615 A2

(12)

(88) Date of publication A3:
21.12.2007

(43) Date of publication:
23.07.2008 Bulletin 2008/30

(21) Application number: 06850136.0

(22) Date of filing: 10.11.2006
(51) International Patent Classification (IPC): 
C07D 221/18(2006.01)
(86) International application number:
PCT/US2006/060767
(87) International publication number:
WO 2007/120263 (25.10.2007 Gazette 2007/43)
(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 LV MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK RS

(30) Priority: 10.11.2005 US 735266 P
14.11.2005 IN CH16552005
28.04.2006 US 745864 P
02.05.2006 US 746211 P

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

(72) Inventors:
  • KATKAM, Srinivas
    Andhra Pradesh (IN)
  • KOMATI, Satyanarayana
    Andhra Pradesh (IN)
  • GUDIPATI, Srinivasulu
    Andhra Pradesh (IN)
  • PITTA, Jayaprakash
    Andhra Pradesh (IN)
  • CHALLA, Nageswara, Rao
    Andhra Pradesh (IN)
  • BUCCHIKONDLA, Ravinder
    Andhra Pradesh (IN)
  • MALLINA, Srinivasa, Rao
    Andhra Pradesh (IN)
  • GOLDWYN, Adolf, Ceaser
    Andhra Pradesh (IN)
  • KHARKAR, Manoj, Ramesh
    Andhra Pradesh (IN)
  • NARSAPUR, Sharat, Pandurang
    Andhra Pradesh (IN)
  • MADDULA, Srinivasula, Reddy
    Andhra Pradesh (IN)
  • KASULA, Ramamurthy
    Andhra Pradesh (IN)
  • LALI, Arvind, Mallinath
    Maharashtra (IN)
  • KALE, Sandeep, Bhaskar
    Maharashtra (IN)
  • BHORI, Abijar, Joyebbhai
    Maharashtra (IN)

(74) Representative: Müller-Boré & Partner Patentanwälte 
Grafinger Strasse 2
81671 München
81671 München (DE)

   


(54) PREPARATION OF DUTASTERIDE