The present invention provides compounds of formula (I)wherein A1, A2, R1, D1, D2, Y3 and X are as defined in the claims. The invention further relates to compositions which comprise these compounds and to their use in agriculture or horticulture for controlling or preventing infestation of plants by phytopathogenic microorganisms, preferably fungi.本發明提供化學式(I)的化合物其中A1、A2、R1、D1、D2、Y3和X的定義如同申請專利範圍中所定義。本發明更進一步與包含這些化合物的組成物有關,及其在農業或園藝中作為控制或預防由植物病原微生物(較佳是真菌)所造成的植物寄生蟲害的用途相關。
