作者:Chiara Ponzoni、Elisa Beneventi、Maria Rita Cramarossa、Stefano Raimondi、Giulia Trevisi、Ugo Maria Pagnoni、Sergio Riva、Luca Forti
DOI:10.1002/adsc.200700043
日期:2007.6.4
A series of hydroxystilbenes, analogues of the bioactive phytoalexin resveratrol, were synthesized and submitted to the catalytic action of a laccase from Trametes pubescens in a biphasic system made of ethyl acetate and acetate buffer. Oxidation took place at the 4′-hydroxy (4-hydroxy) position of the hydroxystilbenic moieties, followed by radical-radical coupling dimerization reactions. Most of the
合成了一系列具有生物活性的植物抗alexin白藜芦醇类似物的羟基苯乙烯,并使其在由乙酸乙酯和乙酸盐缓冲液制成的双相体系中经受了来自Tramets pubescens的漆酶的催化作用。氧化发生在羟基苯乙烯基部分的4'-羟基(4-羟基)位置,随后发生自由基-自由基偶联二聚化反应。分离出的大多数产物均具有良好的收率并得到了充分表征。取决于底物,可以鉴定出三种不同的二聚产物,主要产物通常是4-O-α-ß-5(二氢呋喃样)二聚体。