Process of producing alkylangelicins free from psoralens and...

Details Process of producing alkylangelicins free from psoralens and... Process of producing alkylangelicins free from psoralens and...

C - Chemistry, Metallurgy

07

D

260/357.3, 260/3

C07D 493/04 (2006.01) C07D 311/16 (2006.01)

Patent

CA 1228860

ABSTRACT The alkylangelicins according to the invention are obtained starting from an umbelliferone, in which the 6-position is already substituted by an alkyl group; in such a way the 7-allyloxy or 7-acyloxy umbelliferone intermediates can form by transposition of the allyl or acyl group only the 8-allyl and 8-acyl derivatives, and therefore the presence, even in traces, of psoralens is absolutely excluded in the subsequent synthetic steps. The 6-alkylangelicins thus obtained are particularly usable for the photochemotherapy of psoriasys and of other skin diseases characterized by cellular hyperproliferation, as well as for the photochemotherapy of vitiligo and of alopecia aerata.

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