A fungicidal composition for agricultural use, which comprises a compound of the formula:
wherein R1 and R2 are each hydrogen, lower alkyl or cyclo(lower)alkyl; R3 is lower alkyl or cyclo(lower)alkyl; R4 and R5 are each hydrogen, lower alkyl, lower alkoxy, halogen-substituted lower alkyl, lower alkyl-substituted silyl, halogen or nitro; A represents an unsaturated hydrocarbon group, a halogen-substituted unsaturated hydrocarbon group, a phenyl group or a heterocyclic group, said phenyl group or heterocyclic group being optionally substituted with not more than three substituents; and Z is -CH2-, -CH(OH)-, -CO-, -O-, -S-, -SO-, -NR- (R being hydrogen or lower alkyl), -CH2CH2-, -CH = CH-,
-CH20-, -CH2S-, CH2S0-, -OCH2-, -SCH2- or -SOCH2-.
一种农用杀菌组合物,它包括一种式化合物:
其中 R1 和 R2 分别是
氢、低级烷基或环(低级)烷基;R3 是低级烷基或环(低级)烷基;R4 和 R5 分别是
氢、低级烷基、低级烷
氧基、卤素取代的低级烷基、低级烷基取代的
硅基、卤素或硝基;A 代表不饱和烃基、卤素取代的不饱和烃基、
苯基或杂环基,所述
苯基或杂环基可选择被不多于三个取代基取代;以及 Z 是-
CH2-、-CH(OH)-、-CO-、-O-、-S-、-SO-、-NR-(R 为
氢或低级烷基)、- -、-CH = CH-、-CH = 0-、-CH = 0-、-CH = 0-、-CH = 0-、-CH = 0-、-CH = 0-、-CH = 0-、-CH = 0-、-CH = 0-、-CH = 0-、
- 0-、- S-、 S0-、-O -、-S - 或 -SO -。