| abstract |
The invention concerns di- and tri-esters derived from alkanoic, (cycloalkyl)alkanoic, benzoic or phenylalkanoic acids with N-(acylaminoalkyl)-dihydroxyphenylethanolamines, and pharmaceutically acceptable salts thereof; processes for their preparation and manufacture; and pharmaceutical compositions thereof. The esters are useful for the topical treatment of an area of inflammation affecting the skin of a warm-blooded animal. Representative esters of the invention are 1-[3,4-bis(pivaloyloxy)phenyl]-2-[2-(2-phenylacetamido)ethylamino]-eth anol, 1-[3,4-bis(pivaloyloxy)phenyl]-2-[1,1-dimethyl-2-(2-phenoxyacetamido)- ethylamino]-ethanol, and the hydrochlorides and hydrobromides thereof. |