(19)
(11) EP 2 240 470 A2

(12)

(43) Date of publication:
20.10.2010 Bulletin 2010/42

(21) Application number: 09705099.1

(22) Date of filing: 09.01.2009
(51) International Patent Classification (IPC): 
C07D 403/04(2006.01)
(86) International application number:
PCT/IN2009/000032
(87) International publication number:
WO 2009/095933 (06.08.2009 Gazette 2009/32)
(84) Designated Contracting States:
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 SE SI SK TR
Designated Extension States:
AL BA RS

(30) Priority: 10.01.2008 IN CH01032008
24.09.2008 IN CH23342008

(71) Applicant: MSN Laboratories Limited
Andhra Pradesh 502329 (IN)

(72) Inventors:
  • SATYANARAYANA REDDY, Manne
    Hyderabad 502 329 (IN)
  • ESWARAIAH, Sajja
    Hyderabad 502 329 (IN)
  • VENKAT REDDY, Ghojala
    Hyderabad 502 329 (IN)

(74) Representative: Vossius & Partner 
Siebertstrasse 4
81675 München
81675 München (DE)

   


(54) IMPROVED AND NOVEL PROCESS FOR THE PREPARATION OF BOSENTAN