Novel Antifungal Tetracyclic Compounds fromBauhinia rufescens LAM.
作者:Marc P. Maillard、Maria-Carmen Recio-Iglesias、Mahamane Saadou、Helen Stoeckli-Evans、Kurt Hostettmann
DOI:10.1002/hlca.19910740413
日期:1991.6.19
CH2Cl2 extract of Bauhinia rufescens showed antifungal activity in a bioassay with the plant pathogenic fungus Cladosporium cucumerinum, a phytochemical investigation was undertaken on material collected in Niger. Activity-guided fractionation of this extract, using different preparative chromatographic methods, allowed the isolation of the four new antifungal tetracyclic compounds 1–4. Their structures
由于紫荆花的根皮CH 2 Cl 2提取物在用植物病原真菌黄瓜刺柏(Cladosporium cucumerinum)的生物测定中显示出抗真菌活性,因此对在尼日尔收集的材料进行了植物化学研究。该提取物的活性引导分馏,使用不同的制备色谱法,所允许的四个新的抗真菌的四环化合物的分离1 - 4。通过1 H和13 C-NMR数据确定它们的结构,并使用单晶X射线分析确定1和3的结构。。分离出的化合物似乎在遗传上与二苯乙烯有关。