they had considerable potential for additional modification and optimization as agricultural fungicides. Moreover, three-dimensional quantitative structure–activity relationship models were developed for obtaining a systematic structure–activity relationship profile to explore the possibility of more potent FA derivatives as novel fungicides.
在杀菌剂相关的研究中,从
天然产物中开发具有高抗真菌活性的化合物引起了人们的广泛关注。
镰刀菌酸 (FA) 是一种从尖孢镰刀菌代谢物中分离出来的
生物碱,是开发具有药理活性的
除草剂的重要前体。在我们之前的工作中,我们报道了FA对14种植物病原真菌具有广泛的抑制活性。特别是,它对Colletotrichum higginsianum表现出优异的抗真菌作用(
EC 50 = 31.7 μg/mL)。为了探索在农业领域的实际应用,研究了三个系列FA衍
生物的设计和合成及其对植物病原真菌的抑制活性。结果表明,优化后的FA衍
生物对C. higginsianum、Helminthosporium ( Harpophora maydis )和Pyrillaryia grisea具有良好的抑制活性。特别是,当FA的5-丁基被取代时,抑制活性显着提高。当5-丁基烷基被5-([1,1'-
联苯基]-4-基)和5-苯基取代时,C