申请人:Kumiai Chemical Industry Co., Ltd.
公开号:US04992438A1
公开(公告)日:1991-02-12
Disclosed are pyrimidine derivatives represented by general formula (I) ##STR1## wherein X represents a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, a haloalkyl group or a cyano group; Y.sup.1 represents an alkyl group, a cyanoalkyl group, an alkoxy group, an alkenyl group substituted with a hydroxy group and a halogen atom, an alkynyl group which may be substituted with a hydroxy group, a methylamino group, an alkoxyalkyloxy group, an alkylthioalkyl group or a group of the formula --CH.sub.2 OR.sup.1 where R.sup.1 represents a hydrogen atom, an alkyl group, an alkenyl group or an alkynyl group; Y.sup.2 represents a halogen atom, an alkyl group or a haloalkyl group; R represents a hydrogen atom, an alkyl group, a nitroso group, an alkoxyalkyl group, an alkoxyalkyloxyalkyl group, an alkenyl group, an alkynyl group, a formyl group or an alkylthioalkyl group, with the proviso that (a) when Y.sup.1 represents an alkynyl grop or when Y.sup.1 represents an alkoxy group and Y.sup.2 represents a halogen atom or an alkyl group, X and R are not a hydrogen atom simultaneously, (b) when Y.sup.1 and Y.sup.2 each represents an alkyl group, R is not a hydrogen atom, or (c) when Y.sup.1 represents an alkyl group and Y.sup.2 represents a halogen atom, X and R are not a hydrogen atom simultaneously or X is not a halogen atom nor an alkyl group. Also, agricultural or horticultural compositions containing the pyrimidine derivatives as active ingredient are disclosed, which show high controlling activities for cucumber gray mold (Botrytis cinerea), cucumber downey mildew (Pseudoperonospora cubensis), Alternaria sooty spot of Chineese mustard (Alternaria brassicicola), rice blast (Pyricularia oryzae), etc.
本发明公开了由通式(I)表示的嘧啶衍生物:##STR1## 其中,X代表氢原子、卤原子、烷基、烷氧基、卤代烷基或氰基;Y1代表烷基、氰基烷基、烷氧基、烯基取代的羟基和卤原子、可取代羟基的炔基、甲基氨基、烷氧基烷氧基、烷基硫烷基或式--CH2OR1的基团,其中R1代表氢原子、烷基、烯基或炔基;Y2代表卤原子、烷基或卤代烷基;R代表氢原子、烷基、亚硝基、烷氧基烷基、烷氧基烷氧基烷基、烯基、炔基、甲酰基或烷基硫烷基,但有以下规定:(a)当Y1代表炔基或当Y1代表烷氧基且Y2代表卤原子或烷基时,X和R不能同时为氢原子;(b)当Y1和Y2均代表烷基时,R不能为氢原子;或(c)当Y1代表烷基且Y2代表卤原子时,X和R不能同时为氢原子,或X既不是卤原子也不是烷基。此外,本发明还公开了包含该嘧啶衍生物作为活性成分的农业或园艺组合物,其对黄瓜灰霉病(Botrytis cinerea)、黄瓜霜霉病(Pseudoperonospora cubensis)、中国芥菜黑斑病(Alternaria brassicicola)、稻瘟病(Pyricularia oryzae)等具有高效的控制活性。