作者:D. Engelmeier、F. Hadacek、O. Hofer、G. Lutz-Kutschera、M. Nagl、G. Wurz、H. Greger
DOI:10.1021/np0301339
日期:2004.1.1
3-butylisocoumarins were isolated and identified from lipophilic extracts of aerial as well as underground organs: corfin (17) and 3'-hydroxycorfin (18) from the roots of Chamaemelum mixtum and (-)-(R)-2'-methoxydihydroartemidin (5), (+)-(S,R)-epoxyartemidin (6a), dracumerin (12), (+)-(R)-(E)-3'-hydroxyartemidin (13), and capillarin isovalerate (20) from various organs of Artemisia dracunculus (tarragon). Furthermore
从气生和地下器官的亲脂性提取物中分离并鉴定了七种新的天然3-丁基异香豆素:来自Chamaemelum mixtum和(-)-(R)-2根的corfin(17)和3'-hydroxycorfin(18)。 '-甲氧基二氢青蒿素(5),(+)-((S,R)-环氧青蒿素(6a),dracumerin(12),(+)-(R)-(E)-3'-羟基青蒿素(13)和毛细血管异戊酸(20)来自青蒿(龙蒿)的各个器官。此外,获得了六种已知的衍生物,青蒿二醇(7),(E / Z)-青蒿素(11),毛细管素(19),青蒿醇(21),8-羟基青蒿素(22)和8-羟基毛细管素(23)。所有天然存在的衍生物的抗真菌活性均通过针对稻瘟病菌稻瘟病菌的易感菌株的胚芽管抑制试验确定。3-丁基侧链是高活性的先决条件。另外测试了11种与结构相关的合成衍生物,以探索结构特征对活性的影响。苯甲酸酯,杀稻瘟菌素S,克雷索辛甲基,灰黄霉