The invention relates to the use of quinoxaline derivatives as photostable UV filters in cosmetic and pharmaceutical preparations for protecting the human epidermis or human hair against UV radiation, especially in the 280-400 nm range.
Synthesis of 2,3-Disubstituted 6-Aminoquinoxalines and Their Application to New Fluorescence Derivatization Reagents for Carboxylic Acids
作者:Akira Katoh、Motoki Takahashi、Junko Ohkanda
DOI:10.1246/cl.1996.369
日期:1996.5
Fluorescent 2,3-disubstituted 6-aminoquinoxalines were synthesized by reaction of 2,3-dichloro-6-nitroquinoxaline with some nucleophiles and subsequent catalytic hydrogenation of the nitro group. Further, two of them were demonstrated to be new high-sensitive fluorescence derivatization reagents (1 fmol/1 μl injection volume) for long-chain carboxylic acids.
A series of quinoxalinylurea-based inhibitors are synthesized and shown to be the novel and potent inhibitors against Jnk Stimulatory Phosphatase-1 (JSP-1), which is a special member of dual-specificity protein phosphatase (DSP) family. Biological assay and computational modeling studies showed the compounds were reversible and noncompetitive inhibitors of JSP-1. JSP-1 inhibitors may be useful for the treatment of inflammatory, vascular, neurodegenerative, metabolic, and oncological diseases in humans associated with dysfunctional Jnk signaling. (c) 2007 Elsevier Ltd. All rights reserved.
Mager; Berends, Recueil des Travaux Chimiques des Pays-Bas, 1959, vol. 78, p. 5,17