Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...
Reexamination Certificate
2011-06-14
2011-06-14
Berch, Mark (Department: 1622)
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Having -c-, wherein x is chalcogen, bonded directly to...
C514S263400, C514S234200, C544S118000, C544S277000
Reexamination Certificate
active
07960397
ABSTRACT:
Certain 6,9-disubstituted purine derivatives and their pharmaceutically acceptable salts of the following general formulaare provided wherein R6 and R9 are as defined in the specification. These 6,9-disubstituted purine derivatives and their pharmaceutically acceptable salts are useful in compositions for application to mammalian cells, and especially human skin cells, in order to improve the cosmetic appearance of the mammalian cells, especially human skin.
REFERENCES:
patent: 2010/0234401 (2010-09-01), Szucova et al.
Shadid, Tetrahedron 45(12) 3889 (1989).
Haidoune, Tet. Letter 1419 (1990).
Haidoune, J.CHem. Soc. Perkins I, 3009 (1994).
Dolezal Karel
Massino Frank J.
Spichal Lukas
Strnad Miroslav
Szucova Lucie
Berch Mark
Fitch Even Tabin & Flannery
Institute of Experimental Botany, Academy of Sciences of the Cze
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