US 4,412,992 A · 2-Hydroxy-5-phenylazobenzoic acid derivatives and method of treating ulcerative colitis therewith

Abstract

The present invention provides a pharmaceutical composition for treating ulcerative colitis containing at least one compound of the general formula: ##STR1## wherein X is an --SO.sub.2 -- or --CO-- group and R is either an unsubstituted or substituted non-heterocyclic aromatic ring system or is a radical of the general formula --(CH.sub.2).sub.n --Y, in which Y is a hydroxyl group, an unsubstituted or substituted amino group or a carboxylic or sulphonic acid group and n is a whole number of from 1 to 6 and in which one or more hydrogen atoms in the alkylene radical can be replaced by unsubstituted or substituted amino groups or alkyl radicals and in which the --(CH.sub.2).sub.n --Y radical is either attached directly to the nitrogen atom or via a benzene ring; and/or containing at least one ester thereof and/or at least one non-toxic, pharmaceutically acceptable salt thereof, in admixture with a solid or liquid pharmaceutical diluent or carrier. Furthermore, the present invention provides a process for preparing the compounds of the above-given general formulae and also provides a method of treating ulcerative colitis.

Claims13

Dependent claims

2-Hydroxy-5-phenylazobenzoic acid derivatives of the general formula:

##STR6## wherein X is an --SO.sub.2 -- or --CO-- group and R is either a phenyl or carboxymethylphenyl radical or is a radical of the formula --(CH.sub.2).sub.n --Y, in which Y is a hydroxyl group, an amino group, a monoalkyl- or dialkyl-amino group, the alkyl moieties of which contain up to 6 carbon atoms or a carboxylic or sulphonic acid group and n is a whole number of from 1 to 6 and in which one or more of the hydrogen atoms in the alkylene radical can be replaced by amino groups, monoalkyl- or dialkyl-amino groups, the alkyl moieties of which contain up to 6 carbon atoms or alkyl radicals and in which the --(CH.sub.2).sub.n --Y radical is either attached directly to the nitrogen atom or via a benzene ring, with the proviso that R--NH--X-- is other than a --CO--NH--CH.sub.2 --COOH radical;
and the esters and non-toxic, pharmacologically acceptable salts thereof.

Dependencies are inferred from the claim text.

2-Hydroxy-5-phenylazobenzoic acid derivatives and method of treating ulcerative colitis therewith

Life of this patent

2-Hydroxy-5-phenylazobenzoic acid derivatives and method of treating ulcerative colitis therewith

Life of this patent

Abstract

Claims13