Ten arylazomorpholines were prepared and characterized. Their fungicidal activity against Fusarium oxysporum, Rhizoctonia solani, Macrophomina phasoli, Helminthosporum sp. and Trichoderma harzianum and antibacterial effects against Erwinia amylovora were examined. Derivatives with persuasive in vitro antifungal effects, were checked in vivo on polyphenoloxidase, peroxidase DNA, RNA and sugar contents of Rhizoctonia solani as biomarkers searching their main target. 4-(4-Chlorophenyl)-, 4-(3-chlorophenyl)-, 4-(2-chlorophenyl)- and 4-(4-hydroxy-3,5-dichlorophenyl)azomorpholines highly inhibited all the tested fungi comparing with the standard fungicide metalaxyl. 4-(4-Chlorophenyl)azomorpholine and 4-(2-chlorophenyl)azomorpholine were more effective than metalaxyl inhibiting the hyphal growth of R. solani in liquid media. 4-(Phenyl)azomorpholine and 4-(3-chlorophenyl)azomorpholine completely stopped E. amylovora growth with MIC 4 × 10-5 M similar to streptomycin. 4-(4-Chlorophenyl)azomorpholine and 4-(4-hydroxy-3,5-dichlorophenyl)azomorpholine stimulated polyphenoloxidase and peroxidase. The tested arylazomorpholine derivatives were not specific against DNA and RNA contents. 4-(4-Chlorophenyl)-azomorpholine proved to be more potent than metalaxyl in reducing total soluble sugars and reduced sugars, whereas metalaxyl was near to it on non-reducing sugars.
制备并鉴定了十种芳唑吗啉类化合物。考察了它们对 Fusarium oxysporum、Rhizoctonia solani、Macrophomina phasoli、Helminthosporum sp.和 Trichoderma harzianum 的杀菌活性,以及对 Erwinia amylovora 的抗菌效果。对体外抗真菌效果显著的衍
生物进行了体内检测,以根瘤菌的多
酚氧化酶、
过氧化物酶 DNA、RNA 和糖含量作为
生物标志物,寻找其主要靶标。与标准杀真菌剂 metalaxyl 相比,4-(4-
氯苯基)-、4-(3-
氯苯基)-、4-(2-
氯苯基)- 和 4-(
4-羟基-3,5-二
氯苯基)偶氮吗啉对所有受测真菌都有很强的抑制作用。在液体
培养基中,4-(4-
氯苯基)偶氮吗啉和 4-(2-
氯苯基)偶氮吗啉对 R. solani 的芽胞生长的抑制作用比 metalaxyl 更强。4-(Phenyl)azomorpholine 和 4-(3-chlorophenyl)azomorpholine 能完全阻止 E. amylovora 的生长,其 MIC 值为 4 × 10-5 M,与
链霉素相似。4-(4-
氯苯基)偶氮吗啉和 4-(
4-羟基-3,5-二
氯苯基)偶氮吗啉能刺激多
酚氧化酶和
过氧化物酶。测试的芳基氮吗啉衍
生物对 DNA 和 RNA 含量没有特异性。事实证明,4-(4-
氯苯基)-氮吗啉在还原总可溶性糖和还原糖方面的作用强于
甲霜灵,而
甲霜灵在非还原糖方面的作用接近于它。