Fungicidal compounds of formula (I):
in which D and E are independently H or fluoro; X and Y are O or S; A, B, R³ and R⁴ have various specified values R¹ is C₂₋₄ alkenyl (optionally substituted with halogen), C₂₋₄ alkynyl (optionally substituted with halogen), halo(C₁₋₄)alkyl, C₃₋₆ cycloalkyl, C₃₋₆ cycloalkyl(C₁₋₄)alkyl, C₁₋₄ alkoxy(C₁₋₄)alkyl, C₁₋₄ alkylthio(C₁₋₄)alkyl or cyano; and R² is C₁₋₄ alkyl, C₁₋₄ alkoxy, C₂₋₄ alkenyl (optionally substituted with halogen), C₂₋₄ alkynyl (optionally substituted with halogen), halo(C₁₋₄) alkyl, C₃₋₆ cycloalkyl, C₃₋₆ cycloalkyl(C₁₋₄)alkyl, C₁₋₄alkoxy(C₁₋₄)alkyl, C₁₋₄ alkylthio(C₁₋₄)alkyl or cyano.
化合物的杀菌成分公式(I):其中D和E独立地为H或
氟;X和Y为O或S;A、B、R³和R⁴具有不同的指定值,R¹为C₂₋₄烯基(可选择用卤素取代)、C₂₋₄炔基(可选择用卤素取代)、卤(C₁₋₄)烷基、C₃₋₆环烷基、C₃₋₆环烷基(C₁₋₄)烷基、C₁₋₄烷氧基(C₁₋₄)烷基、C₁₋₄烷基
硫基(C₁₋₄)烷基或
氰基;R²为C₁₋₄烷基、C₁₋₄烷氧基、C₂₋₄烯基(可选择用卤素取代)、C₂₋₄炔基(可选择用卤素取代)、卤(C₁₋₄)烷基、C₃₋₆环烷基、C₃₋₆环烷基(C₁₋₄)烷基、C₁₋₄烷氧基(C₁₋₄)烷基、C₁₋₄烷基
硫基(C₁₋₄)烷基或
氰基。