(19)
(11) EP 0 773 928 A1

(12)

(43) Date of publication:
21.05.1997 Bulletin 1997/21

(21) Application number: 95927711.0

(22) Date of filing: 21.07.1995
(51) International Patent Classification (IPC): 
C07D 205/ 095( . )
C07D 501/ 00( . )
C07D 513/ 04( . )
C07D 417/ 12( . )
C07D 501/ 08( . )
(86) International application number:
PCT/EP1995/002911
(87) International publication number:
WO 1996/003373 (08.02.1996 Gazette 1996/07)
(84) Designated Contracting States:
AT BE CH DE DK FR GB IE IT LI LU NL PT SE

(30) Priority: 22.07.1994 IT 1994MI01554

(71) Applicant: BIOCHIMICA OPOS SPA
20089 Valleambrosia di Rozzano (Milano) (IT)

(72) Inventors:
  • CAINELLI, Gianfranco
    I-40137 Bologna (IT)
  • CONTENTO, Michele
    F-40126 Bologna (IT)
  • DA COL, Marco
    I-40139 Bologna (IT)
  • DALL'ASTA, Leone
    I-27100 Pavia (IT)
  • PANUNZIO, Mauro
    I-40126 Bologna (IT)
  • RESTA, Irene
    I-20133 Milano (IT)
  • SANDRI, Sergio
    I-47100 Forli (IT)
  • UMANI RONCHI, Achille
    I-40137 Bologna (IT)

(74) Representative: Dragotti, Gianfranco 
SAIC BREVETTI s.r.l. Galleria San Babila, 4/D
20122 Milano
20122 Milano (IT)

   


(54) 2-(2-AZETIDINON-N-YL)-2- AND 3-BUTENOIC ACIDS DERIVATIVES AND THEIR USE IN THE CEPHALOSPORINE SYNTHESIS