henylazo)benzoic acid (HAZA) scaffold, the orthogonally protected difunctional azo–arene cleavablelinker 26 was designed and synthesized. Selective linker deprotection and derivatization was performed by introducing an alkyne reactive group and a biotin affinity tag. This optimized azo–arene cleavablelinker led to a total cleavage in less than 10 s with only 1 mM dithionite. Similar results were
Synthesis of derivatives of benzene-1,2,3,5-tetrol
作者:Emmanuel M. Kampouris
DOI:10.1039/j39680002125
日期:——
1,3-Di-O-substituted derivatives of benzene-1,2,3,5-tetrol were prepared from 2-nitrophloroglucinol-1,3-dibenzenesulphonate, or other 1,3-di-O-substituted derivatives of 2-nitropholoroglucinol and 5-nitropyrogallol. The p-nitrophenols were reduced to the corresponding amines which were then oxidised by an improved method to the p-benzoquinones; these on reduction gave the products. The 1,3- and 2,5-dimethyl
6,9-Disubstituted Purine Derivatives and Their Use as Cosmetics and Cosmetic Compositions
申请人:Szucova Lucie
公开号:US20090170879A1
公开(公告)日:2009-07-02
Certain 6,9-disubstituted purine derivatives and their pharmaceutically acceptable salts are provided. These 6,9-disubstituted purine derivatives and their pharmaceutically acceptable salts are useful in compositions for treating mammalian cells, and especially human skin cells, in order to ameliorate the adverse effects of aging, treat skin disease states, treat immunological responses resulting from or associated with inflammation, and the like.
6, 9-Disubstituted Purine Derivatives and Their Use as Cosmetics and Cosmetic Compositions
申请人:Szucova Lucie
公开号:US20110230503A1
公开(公告)日:2011-09-22
Certain 6,9-disubstituted purine derivatives and their pharmaceutically acceptable salts are provided. These 6,9-disubstituted purine derivatives and their pharmaceutically acceptable salts are useful in compositions for treating mammalian cells, and especially human skin cells, in order to ameliorate the adverse effects of aging, treat skin disease states, treat immunological responses resulting from or associated with inflammation, and the like.