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US 5,414,132 AGranted
1-alkyl-2-hydroxy-2-trifluoromethyl ethylamines
AssigneeZeneca Limited
InventorsMark M. Stein, Diane A. Trainor
Life of this patent
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Abstract
The invention concerns pharmaceutically useful trifluoromethyl ketone substituted di-, tri- and tetra-peptide derivatives of the formulae Ia, Ib, Ic set out hereinafter, and salts thereof, which are inhibitors of human leukocyte elastase. Also described herein are pharmaceutical compositions containing a peptide derivative and processes and intermediates for use in the manufacture of the peptide derivatives.
Claims2
A compound of the formula V ##STR5## wherein R.sup.1 is an alkyl group containing 1 to 5 carbon atoms and the acid-addition salts thereof.
Dependencies are inferred from the claim text.