Fungicidal compositions comprise a compound of formula I ##STR1## in which R.sup.1 and R.sup.3 are hydrogen, alkyl or alkenyl; R.sup.2 is alkyl optionally substituted by a 5 or 6 membered oxygen containing ring or by phenyl (optionally substituted) and one of R.sup.4 and R.sup.5 is--CN and the other is a carboxylic ester or amide group. Many of the compounds are novel.
杀真菌组合物包括公式I的化合物##STR1##其中R.sup.1和R.sup.3是氢,烷基或烯基; R.sup.2是烷基,可以选择地被5或6个成员的含氧环或苯基(可选择地被取代)替代,并且R.sup.4和R.sup.5中的一个是-CN,另一个是
羧酸酯或酰胺基团。其中许多化合物是新的。