Light-screening benzoxazole derivatives

Details Light-screening benzoxazole derivatives Light-screening benzoxazole derivatives

1979-10-18

1981-02-10

Sutto, Anton H.

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548217, C07D26354

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042503159

ABSTRACT:
Benzoxazole derivatives represented by the formula ##STR1## wherein R is in the 5- or 6-position and is hydrogen or an alkyl group containing 1 to 4 carbon atoms and R.sup.1 and R.sup.2 are independently hydrogen, an alkyl group containing 1 to 4 carbon atoms or a group having the formula--(XO).sub.n --H, wherein X is ethylene or ethylene substituted by methyl or ethyl and which contains a total of 2 to 4 carbon atoms and n is an integer of 1 to 10, at least one of R.sup.1 and R.sup.2 being other than hydrogen, or R.sup.1 and R.sup.2, taken together with the nitrogen to which they are attached, form a 5- to 7-membered, saturated heterocyclic ring,
and cosmetically acceptable salts thereof. The subject compounds, in combination with a suitable cosmetic carrier, are useful as radiation absorbers, i.e., UV-A filters.

REFERENCES:
patent: 2715032 (1955-08-01), Sartori
patent: 2793192 (1957-05-01), Leavitt
patent: 3452036 (1969-06-01), Crocker et al.
patent: 3551443 (1970-12-01), Duennevberger
patent: 3585208 (1971-06-01), Rash et al.
patent: 3586670 (1971-06-01), Brenneisen et al.
patent: 3696193 (1972-10-01), Guglielmetti et al.
Hein et al., "J. Am. Chem. Soci.,"vol. 79, (1957), pp. 427-429.

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