Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...
Patent
1996-11-05
1999-03-02
Richter, Johann
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Having -c-, wherein x is chalcogen, bonded directly to...
514563, 548545, A61K 3140, C07D201448
Patent
active
058772049
ABSTRACT:
The present invention relates to compounds which are useful as sunscreens. The compounds persist on the skin for much longer than conventional sunscreens because they comprise a Michael acceptor linked directly or indirectly to a chromophore. The Michael acceptor is capable of undergoing a conjugate addition reaction with thiol groups present in cysteine residues of keratin and thus the compound is chemically bound to the skin and will not be removed by immersion in water.
REFERENCES:
patent: 3751449 (1973-08-01), Gobran et al.
Bishop Paul Beaumont
Davison Bruce Everett
Ganellin Charon Robin
Jack David
Jones Bryan Colin Nicholas Morgan
Lutz Laura R. C.
Richter Johann
Vanguard Medica Limited
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