Synthesis and free radical scavenging activity of a novel metabolite from the fungus Colletotrichum gloeosporioides
作者:Marienca Femenía-Ríos、Carlos M. García-Pajón、Rosario Hernández-Galán、Antonio J. Macías-Sánchez、Isidro G. Collado
DOI:10.1016/j.bmcl.2006.08.071
日期:2006.11
A novel metabolite (-)-1 was isolated as its peracetylated derivative, (-)-2-(3',4'-diacetoxyphenyl)-3,4-diacetoxytetrahydrofuran (2), from a strain of the phytopathogenic fungus Colletotrichum gloeosporioides CECT 20122. The synthesis of (-)-1 was carried out by ring-closing metathesis of diene 6 and stereoselective dihydroxylation of a dihydrofuran derivative 7 as key steps. The tetraol (-)-1 showed
从植物病原性真菌Colletotrichum gloeosporioides CECT菌株中分离出一种新的代谢物(-)-1,作为其过乙酰化衍生物(-)-2-(3',4'-二乙酰氧基苯基)-3,4-二乙酰氧基四氢呋喃(2)。 20122。(-)-1的合成是通过二烯6的闭环复分解和二氢呋喃衍生物7的立体选择性二羟基化作为关键步骤进行的。四元醇(-)-1的自由基清除活性与BHT,咖啡酸或原儿茶酸相当。