(19)
(11) EP 1 638 540 A2

(12)

(88) Date of publication A3:
14.04.2005

(43) Date of publication:
29.03.2006 Bulletin 2006/13

(21) Application number: 04739938.1

(22) Date of filing: 16.06.2004
(51) International Patent Classification (IPC): 
A61K 31/00(1985.01)
(86) International application number:
PCT/EP2004/006471
(87) International publication number:
WO 2005/000281 (06.01.2005 Gazette 2005/01)
(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

(30) Priority: 24.06.2003 EP 03006616

(71) Applicant: Actelion Pharmaceuticals Ltd.
4123 Allschwil (CH)

(72) Inventors:
  • HOUILLE, Olivier
    F-68510 Magstatt Le Bas (FR)
  • FRETZ, Heinz
    CH-4125 Riehen (CH)
  • HILPERT, Kurt
    CH-4114 Hofstetten (CH)
  • RIEDERER, Markus
    CH-4410 Liestal (CH)
  • GILLER, Thomas
    CH-4451 Wintersingen (CH)
  • VALDENAIRE, Oliver
    CH-4123 Allschwill (CH)

(74) Representative: Ruhlmann, Eric 
Actelion Pharmaceuticals Ltd Gewerbestrasse 16
4123 Allschwil
4123 Allschwil (CH)

   


(54) PYRAZOLIDINEDIONE DERIVATIVES AND THEIR USE AS PLATELET AGGREGATION INHIBITORS