CHIRAL ISOMERIC SULFITE COMPOUND AND ITS APPLICATION

Claims

This disclosure describes chiral isomeric sulfite compounds, their preparative separation, and applications in the technical field of agriculture. It has been found that chiral isomeric sulfite compounds with the general formula (A) exhibit excellent inhibitory activity against pest eggs, particularly against the eggs of thrips, mites, and lepidopteran moths such as Aleyrodidae and Harmonia axyridis. Furthermore, they possess germicidal activity, and their absolute configuration is obtained through preparative separation. Compounds with such structures can be used to destroy pest eggs and germs, and they hold significant value for agrochemical research, with broad application prospects in the field of agricultural pharmaceuticals.

1. A sulfite compound having a structure as shown in formula (A) or a mesomer, a racemate, a stereoisomer, and a pharmaceutically acceptable salt thereof, wherein R1 and R2 are independently selected from hydrogen, halogen, a substituted or unsubstituted C1-C10 alkyl, a substituted or unsubstituted C1-C10 alkoxy, a C2-C10 alkoxycarbonyl, a C2-C10 alkylcarbonyl, and a C1-C10 carbonyl; R3, R3', R4, and R4' are each independently selected from hydrogen, C1-C5 alkyl, C1-C5 alkenyl; or, R3, R3', R4, and R4' together with the carbon atom to which they are attached form a five-membered heterocycloalkyl; R5 is selected from halogen, and a substituted or unsubstituted C1-C10 alkyl.

14. A pesticide composition, wherein the compound of formula (A) is used as the active substance.