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US 4,061,773 AGranted
Glycyrrhetinic acid derivatives
AssigneeBiorex Laboratories Limited
InventorRosalind Po Kuen Chan
Life of this patent
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Abstract
The present invention provides new glycyrrhetinic acid derivatives of the general formula: ##STR1## wherein R is an alkylene or cycloalkylene radical and X represents an oxygen atom or two hydrogen atoms; and the non-toxic salts and esters thereof.
Claims18
A compound of the formula ##STR3## wherein R is alkylene of 1-10 carbon atoms and X represents an oxygen atom or two hydrogen atoms;
- or a non-toxic salt or methyl or ethyl ester thereof.
Dependencies are inferred from the claim text.