Cephem compounds

Details Cephem compounds Cephem compounds

2007-02-20

2007-02-20

Berch, Mark L. (Department: 1624)

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Heterocyclic carbon compounds containing a hetero ring...

C540S222000

Reexamination Certificate

active

10475845

ABSTRACT:
The present invention relates to a compound of the formula [I]: wherein A is lower alkylene or lower alkenylene; R1is lower alkyl, hydroxy(lower)alkyl, protected hydroxy(lower)alkyl, amino(lower)alkyl or protected amino(lower)alkyl, and R2is hydrogen or amino protecting group, or R1and R2are bonded together and form lower alkylene; R3and R5are independently amino or protected amino; and R4is carboxy or protected carboxy, or a pharmaceutically acceptable salt thereof, a process for preparing a compound of the formula [I], and a pharmaceutical composition comprising a compound of the formula [I] in admixture with a pharmaceutically acceptable carrier.

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