作者:Jan Kyselka、Roman Bleha、Miroslav Dragoun、Kristýna Bialasová、Šárka Horáčková、Martin Schätz、Marcela Sluková、Vladimír Filip、Andriy Synytsya
DOI:10.1021/acs.jafc.8b03976
日期:2018.10.24
bioassay-guided fractionation was the selection of the most potent group of compounds responsible for the protection of sunflower bee pollen grains. Synthesis of prospective antifungal polyamides of hydroxycinnamic acids was based on previous structural elucidation of ethanol soluble fraction by 1H,1H-PFG-COSY, 1H,13C-HSQC, FT-IR, FT-Raman, and LC–MS experiments. The main compounds found were tri-p-coumaroylspermidines
生物测定指导分级分离的目的是选择最有效的一组化合物来保护向日葵蜂花粉粒。羟基肉桂酸的预期抗真菌聚酰胺的合成是基于先前对乙醇可溶级分的结构解析,方法是1 H,1 H-PFG-COSY,1 H,13 C-HSQC,FT-IR,FT-Raman和LC-MS实验。发现的主要化合物为三对-香豆酰亚精胺,并伴有其他亚精胺和腐胺的HCAA。制备了几种HCAA模型衍生物以测试其对广泛变质真菌的抗真菌活性(A.niger 42 CCM 8189,F。culmorum DMF 0103和P.verrucosum DMF 0023)。A.niger CCM 8189和F. culmorum DMF 0103对羟肉桂酰胺的抗真菌作用表现出更高的抗性,而疣状假单胞菌DMF 0023是最敏感的菌株。已经发现HCAA极性对次级代谢产物在花粉粒的微生物保护中的作用。生物测定指导的分级分离,结构阐明,预期化合物的选择以及它