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US 4,248,890 AGranted
L-Cysteine derivatives and medicaments containing them
AssigneeParcor
InventorJean-Pierre Maffrand
Life of this patent
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Abstract
L-cysteine derivatives of formula ##STR1## in which R is a lower alkoxycarbonyl or carboxy group, and salts thereof. The compounds have been found to have a mucolytic activity and low toxicity. Processes for the preparation of the compounds and medicaments containing them are described and exemplified.
Claims13
L-cysteine compound of the formula ##STR5## in which R is lower alkoxycarbonyl or carboxy or a pharmaceutically acceptable salt thereof.
Dependencies are inferred from the claim text.