.alpha.-hydroxyketoalkyl derivatives as light protection filters

Details .alpha.-hydroxyketoalkyl derivatives as light protection filters .alpha.-hydroxyketoalkyl derivatives as light protection filters

1996-09-20

1999-10-19

Kight, John

Drug, bio-affecting and body treating compositions

Topical sun or radiation screening, or tanning preparations

424 78, 514387, 514545, 514570, 514681, 514685, 514844, 544180, 544194, 544204, 544208, 544209, 544211, 544212, 544219, 544220, 544223, 544349, 5483044, 5483064, 560 51, 560 53, 568303, 568306, 568308, 568325, 568326, 568327, 568331, 568373, 568376, A61K 742, A01N 4366, C07C 4900, C07D25100

Patent

active

059684828

ABSTRACT:
The invention relates to the use of .alpha.-hydroxyketoalkyl derivatives as light protection filters for cosmetic or pharmaceutical products, the .alpha.-hydroxyketoalkyl group being linked, if appropriate via a spacer, to a chromophoric group which has an absorption maximum in a wavelength range of between 280 and 400 nm and has a conjugated .pi.-electron system of at least 8 .pi.-electrons, and to new .alpha.-hydroxyalkyl derivatives, processes for their preparation and pharmaceutical and cosmetic formulations comprising these derivatives as light protection substances.

REFERENCES:
patent: 3920668 (1975-11-01), Nicki et al.
patent: 5232688 (1993-08-01), Ziegler et al.
patent: 5600007 (1997-02-01), Martin et al.

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