The antifungal activity of 37 N-(methoxy-substituted benzoyl)anthranilic esters was tested on the powdery mildew of barley caused by Erysiphe graminis by the pot test. Among the methyl N-(methoxy-substituted benzoyl)anthranilates tested, 3, 4-dimethoxybenzoyl derivative exhibited the highest activity. The variation in fungicidal activity of N-(3, 4-dimethoxy-benzoyl)anthranilic esters was shown to be related with variation in hydrophobicity and the electronic property of the alcohol moiety of the ester. The branching at the α-position of the alcohol moiety of the ester was detrimental to the activity.
37种N-(甲氧基取代的苯甲酰)
蒽醌酯的抗真菌活性通过盆栽试验在由小麦白粉病(Erysiphe graminis)引起的大麦粉状霉菌上进行了测试。在测试的甲基N-(甲氧基取代的苯甲酰)
蒽醌酯中,3,4-二
甲氧基苯甲酰衍
生物表现出最高的活性。N-(3,4-二
甲氧基苯甲酰)
蒽醌酯的杀真菌活性的变化被证明与酯的醇基的疏
水性和电子性质的变化相关。醇基在α位的支链对活性是有害的。