US 5,292,733 A · Cephalosporin compounds

Abstract

The present invention relates to a cephalosporin compound including the pharmaceutically acceptable non-toxic salts, physiologically hydrolyzable esters, hydrates and solvates thereof of the formula(I) and its isomers: ##STR1## wherein: R.sup.1 is a C.sub.1-4 alkyl, C.sub.3-4 alkenyl, C.sub.3-4 alkynyl or --C(R.sup.3)(R.sup.4)COOH wherein R.sup.3 and R.sup.4, which may be the same or different, are hydrogen, C.sub.1-4 alkyl group, or constitute a C.sub.3-7 cycloalkyl group with the carbon atoms to which R.sup.3 and R.sup.4 are attached; R.sup.2, which may be attached to N.sup.a or N.sup.b, is a C.sub.1-4 alkyl, C.sub.3-4 alkenyl, C.sub.3-7 cycloalkyl, aryl or amino group; and Q.sub.1 and Q.sub.2, which may be the same or different, are CH or N.

Claims5

Dependent claims

A cephalosporin compound of the formula (I) and its isomers and pharmaceutically acceptable non-toxic salts:

##STR16## wherein:
R.sup.1 is a C.sub.1-4 alkyl, C.sub.3-4 alkenyl, C.sub.3-4 alkynyl or --C(R.sup.3)(R.sup.4)COOH wherein R.sup.3 and R.sup.4, which may be the same or different, are a hydrogen or a C.sub.1-4 alkyl group, or constitute a C.sub.3-7 cycloalkyl group with the carbon atoms to which R.sup.3 and R.sup.4 are linked;
R.sup.2, which may be attached to N.sup.a or N.sup.b, is a C.sub.1-4 alkyl, C.sub.3-4 alkenyl, C.sub.3-7 cycloalkyl, phenyl or amino group;
Q.sub.1 is CH or N;
and
Q.sub.2 is N.

3 more elements

Dependencies are inferred from the claim text.

Cephalosporin compounds

Life of this patent

Cephalosporin compounds

Life of this patent

Abstract

Claims5