Cysteine derivatives having expectorant activity

Details Cysteine derivatives having expectorant activity Cysteine derivatives having expectorant activity

1988-07-29

1990-03-20

Lee, Mary C.

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Ester doai

558254, A61K 31265, C07C153017, C07C153023

Patent

active

049102222

ABSTRACT:
The present invention covers D or L or DL-cysteine derivatives of the general formula (I) ##STR1## wherein R represents H or a fatty saturated or unsaturated acid radical, or a radical of an aromatic acid such as benzoic, cynnamic, salycilic, 2-acetoxybenzoic acid or a heterocyclic acid, as well as their salts, in particular the Ca and Mg salts.
The invention refers also to a process for preparing said derivatives and to the pharmaceutical preparations containing them as active principle, having a bronchial liquefying and expectorating activity.

REFERENCES:
patent: 2406362 (1946-08-01), Farlow

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