(19)
(11) EP 1 670 806 B8

(12) CORRECTED EUROPEAN PATENT SPECIFICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 B1)

(48) Corrigendum issued on:
10.03.2010 Bulletin 2010/10

(45) Mention of the grant of the patent:
06.01.2010 Bulletin 2010/01

(21) Application number: 04769194.4

(22) Date of filing: 27.08.2004
(51) International Patent Classification (IPC): 
C07F 7/18(2006.01)
(86) International application number:
PCT/IB2004/002777
(87) International publication number:
WO 2005/021560 (10.03.2005 Gazette 2005/10)

(54)

PROCESS FOR PREPARATION OF ESTERS OF 2-DIAZO-3-TRIMETHYLSILYLOXY-3-BUTENOIC ACID

VERFAHREN ZUR HERSTELLUNG VON ESTERN VON 2-DIAZO-3-TRIMETHYLSILYLOXY-3-BUTENSÄURE

PROCEDE POUR LA PREPARATION D'ESTERS D'ACIDE 2-DIAZO-3-TRIMETHYLSILYLOXY-3 BUTENOIQUE

(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL LT LV MK

(30) Priority: 28.08.2003 WO PCT/IN02/00003

(43) Date of publication of application:
21.06.2006 Bulletin 2006/25

(73) Proprietor: Ranbaxy Laboratories Limited
Gurgaon - 122001, Haryana (IN)

(72) Inventors:
  • KUMAR, Yatendra
    Gurgaon, Haryana 122001 (IN)
  • TEWARI, Neera
    Gurgaon, Haryana 122001 (IN)
  • RAI, Bishwa, Prakash
    Azamgarh, Uttar Pradesh 276306 (IN)

(74) Representative: Cronin, Brian Harold John 
CRONIN Intellectual Property Chemin de Précossy 31
1260 Nyon
1260 Nyon (CH)


(56) References cited: : 
EP-A- 0 409 331
 EP-A- 0 414 904
   
       
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).