Study on the Design, Synthesis, Bioactivity and Translocation of the Conjugates of Phenazine-1-carboxylic Acid and N-Phenyl Alanine Ester
作者:Yiran Wu、Guoqing Mao、Gaoshan Xing、Yao Tian、Yong Hu、Changzhou Liao、Li Li、Xiang Zhu、Junkai Li
DOI:10.3390/molecules29081780
日期:——
phenazine-1-carboxylic acid (PCA) is known to lack phloem mobility, whereas Metalaxyl is a representative phloem systemic fungicide. In order to endow PCA with phloem mobility and also enhance its antifungal activity, thirty-two phenazine-1-carboxylic acid-N-phenylalanine esters conjugates were designed and synthesized by conjugating PCA with the active structure N-acylalanine methyl ester of Metalaxyl. All
已知天然农药吩嗪-1-羧酸(PCA)缺乏韧皮部迁移性,而甲霜灵是一种代表性的韧皮部内吸性杀菌剂。为了赋予PCA韧皮部迁移性并增强其抗真菌活性,通过将PCA与甲霜灵活性结构N-酰基丙氨酸甲酯缀合,设计并合成了32种吩嗪-1-羧酸-N-苯丙氨酸酯缀合物。所有目标化合物均通过 1H NMR、13C NMR 和 HRMS 进行表征。抗真菌评价结果表明,几种目标化合物对核盘菌、大豆疫霉、寄生疫霉、柑橘疫霉表现出中度至强效的抗真菌活性。特别是,化合物F7对核盘菌表现出优异的抗真菌活性,EC50值为6.57 µg/mL,优于甲霜灵。蓖麻子系统中的韧皮部迁移性研究表明目标化合物 F1-F16 具有良好的韧皮部迁移性。特别是,化合物F2表现出优异的韧皮部迁移性;蓖麻子韧皮部汁液中化合物F2的含量为19.12μmol/L,是甲霜灵(3.56μmol/L)的6倍。不同pH培养液下的韧皮部迁移率测试验证了与“离子