Kojic acid derivative as depigmentation agent

5-Hydroxy-4-oxo-4H-pyran-2-ylmethyl 2-oxothiazolidine-4-carboxylate and its salts are new. The claimed preparation of (I) comprises esterifying the alcohol function of kojic acid with L-2-oxothiazolidine-4-carboxylic acid (II), preferably by converting kojic acid to a bromo derivative and reacting t...

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Hauptverfasser: GALEY, JEAN-BAPTISTE, PICHAUD, PATRICK
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:5-Hydroxy-4-oxo-4H-pyran-2-ylmethyl 2-oxothiazolidine-4-carboxylate and its salts are new. The claimed preparation of (I) comprises esterifying the alcohol function of kojic acid with L-2-oxothiazolidine-4-carboxylic acid (II), preferably by converting kojic acid to a bromo derivative and reacting this with (II).