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  • Synthesis and free radical scavenging activity of some new spiropyranocoumarins.

Synthesis and free radical scavenging activity of some new spiropyranocoumarins.

Bioorganic & medicinal chemistry letters (2008-10-07)
Vassiliki Panteleon, Ioannis K Kostakis, Panagiotis Marakos, Nicole Pouli, Ioanna Andreadou
ABSTRACT

A series of novel spiro-substituted 4-hydroxypyranocoumarins and their corresponding dihydropyrano cis-diols has been synthesized. Among them the spiroadamantylpyranocoumarin and the diols can interact with the stable free radical 1,1-diphenyl-2-picrylhydrazyl and scavenge superoxide anions generated in the xanthine-xanthine oxidase system.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Butylated hydroxytoluene, ≥99%, FCC, FG
Supelco
3,5-Di-tert-butyl-4-hydroxytoluene, analytical standard
Sigma-Aldrich
4-Hydroxycoumarin, 98%
Sigma-Aldrich
2,6-Di-tert-butyl-4-methylphenol, purum, ≥99.0% (GC)
Sigma-Aldrich
Umbelliferone, 99%
Sigma-Aldrich
2,6-Di-tert-butyl-4-methylphenol, ≥99.0% (GC), powder
Sigma-Aldrich
2,6-Di-tert-butyl-4-methylphenol, tested according to Ph. Eur.
Sigma-Aldrich
Umbelliferone, suitable for fluorescence indicator, ≥98.0% (HPLC)