New cephem compounds, processes for their preparation, pharmaceutical compositions containing them and intermediate products for their preparation
申请人:FUJISAWA PHARMACEUTICAL CO., LTD.
公开号:EP0074653A2
公开(公告)日:1983-03-23
New cephem cumpounds of the formula:
wherein
R' is ammo or a protected amino group.
R2 is lower aliphatic hydrocarbon group which may be substituted with suitable substituent(s), cylclopower)lalkyl or cyclo(lower)alkenyl;
R3 defines certain subsituents,
R4 is hydrogen or lower alkyl, and pharmaceutically acceptable salts thereof, processes for their preparation, and a pharmaceutrcal antibacterial composition comprising the above compound in associationwith a pharmaceutically acceptable substantially carrier or excipient.The Invention refers also to compounds of the formula
Process for preparing intermediate products and their use for preparing cephem compounds
申请人:FUJISAWA PHARMACEUTICAL CO., LTD.
公开号:EP0231475A1
公开(公告)日:1987-08-12
A process for preparing a compound of the formula :
wherein
R2 is lower aliphatic hydrocarbon group which may be substituted with suitable substituent(s), cyclo(lower)alkyl or cyclo(lower)alkenyl; or a salt thereof, which comprises reacting a compound of the formula :
wherein
R2 is as defined above and
Y is halogen,
or a salt thereof, with a salt of HSCN.
The obtained compounds are intermediates which can be used for preparing cephem compounds.