Institut National De La Sante Et De La Recherche Medicale

Paul Vigny

Emile R Bisagni

Dietrich Averbeck

Louis Dubertret

Maria N Schwencke

Francois Zajdela

Dora Papadopoulo

Jacqueline Moron

Ethel Moustacchi

Jocelyne Blais

Silvano Nocentini

Monofunctional psoralen derivatives having the general formula ##STR1## wherein R represents a hydrogen atom, a lower alkyl group having from 1 to 4 atoms, preferably a methyl radical, or a lower alkoxy radical having from 1 to 4 carbon atoms, preferably a methoxy radical are described. The derivatives are photobiologically active and are useful in photochemical therapy and in cosmetics.

(3,4-c)-Pyrido psoralens, process of preparation, application in

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Paris, France

Paul Vigny