| abstract |
The present invention relates to a novel styrene compound and its application in the prevention and treatment of agricultural diseases, in particular to a compound of formula I, stereoisomers, tautomers, geometric isomers or pharmaceutically acceptable Acceptable salts are characterized in that the formula I structure is as follows: R 1 is selected from halogen, C1-C4 alkoxy, C1-C4 alkyl, halogenated C1-C4 alkyl; R 2 is selected from H, C1-C4 alkyl, R 3 , R 4 are each independently selected from any C1-C4 alkyl, -NHBoc selected to be substituted by one or more R a , or R 3 and R 4 together are five to six-membered cycloalkyl or azacycloalkane optionally substituted by one or more R a or R 2 , R 3 , R 4 together form a bridged cycloalkane optionally substituted by one or more C1-C4 alkyl, C1-C4 alkoxy, -C(O)OR b ; R b is selected from C1-C4 alkyl; n is an integer of 0-5. |