EP 0773928 A1 19970521 - 2-(2-AZETIDINON-N-YL)-2- AND 3-BUTENOIC ACIDS DERIVATIVES AND THEIR USE IN THE CEPHALOSPORINE SYNTHESIS
Title (en)
2-(2-AZETIDINON-N-YL)-2- AND 3-BUTENOIC ACIDS DERIVATIVES AND THEIR USE IN THE CEPHALOSPORINE SYNTHESIS
Title (de)
2-(2-AZETIDINON-N-YL)2-UND 3-BUTENSÄURE DERIVATE UND IHRE VERWENDUNG ZUR SYNTHESE VON CEPHALOSPORINEN
Title (fr)
DERIVES D'ACIDES 2-(2-AZETIDINONE-N-YL)-2 ET 3-BUTENOIQUES ET LEUR UTILISATION DANS LA SYNTHESE DE LA CEPHALOSPORINE
Publication
Application
Priority
- EP 9502911 W 19950721
- IT MI941554 A 19940722
Abstract (en)
[origin: WO9603373A1] Esters of 2-(2-azetidinon-N-yl)-2- and 3-butenoic acids of formula (I), wherein X is an acylamino group, Y is a S-substituted dithio group or a sulfonylthio group, or X and Y are joined to form a group (a), wherein R<1> is the aliphatic, aromatic or arylaliphatic residue bound to the carbonyl of said acylamino group and R<2> represents a carboxy-protecting group. The compounds (I) are intermediates in the preparation of cephem derivatives unsubstituted in the 3-position.
IPC 1-7
IPC 8 full level
C07D 205/095 (2006.01); C07D 417/12 (2006.01); C07D 501/00 (2006.01); C07D 501/08 (2006.01); C07D 513/04 (2006.01)
CPC (source: EP)
C07D 205/095 (2013.01); C07D 417/12 (2013.01); C07D 501/00 (2013.01); C07D 513/04 (2013.01); Y02P 20/55 (2015.11)
Citation (search report)
See references of WO 9603373A1
Designated contracting state (EPC)
AT BE CH DE DK FR GB IE IT LI LU NL PT SE
DOCDB simple family (publication)
WO 9603373 A1 19960208; AU 3164895 A 19960222; EP 0773928 A1 19970521; IT 1270995 B 19970526; IT MI941554 A0 19940722; IT MI941554 A1 19960122; JP H10503190 A 19980324
DOCDB simple family (application)
EP 9502911 W 19950721; AU 3164895 A 19950721; EP 95927711 A 19950721; IT MI941554 A 19940722; JP 50546695 A 19950721