FIELD: chemistry.
SUBSTANCE: invention relates to novel sulphonamide derivatives of formula (I),
where R1 is selected from a group consisting of C1-C6alkyl, C1-C6halogenalkyl, C3-C6alkenyl and C3-C5cyclopropyl-C1-C6-alkyl; R2 is selected from a group consisting of hydrogen and C1-C4alkyl; R3 is selected from a group consisting of hydrogen, halogen and C1-C4alkyl; R7 and R8 are independently selected from a group consisting of hydrogen, halogen, cyano, C1-C4alkyl, C2-C4alkenyl, C2-C4alkynyl, C1-C4alkoxy, C1-C4halogenalkyl, C1-C4haloalkoxy and C3-C4cycloalkyl; R4 and R5 are independently selected from a group consisting of hydrogen, C1-C4alkyl, C1-C4haloalkyl and C3-C4cycloalkyl; or R4 and R5 can form together with atom or atoms, to which they are directly connected, C3-C4cycloalkyl or C4heterocyclyl; R6 is hydrogen; L is selected from group consisting of link, linear -C1-C4-alkyl chain, linear -C2-C4-alkenyl chain and linear -C2-C4-alkynyl chain; A is hydrogen, C1-C7alkyl, C3-C5cycloalkyl, 3–10-member heterocyclyl or aryl, each of which is optionally substituted with one to three Ry, and where heterocyclyl moieties contain from one to four heteroatoms selected from nitrogen, oxygen and sulfur; Ry independently of each other is selected from a group consisting of halogen, cyano, nitro, C1-C4alkyl, C1-C4alkoxy, C1-C4halogenalkyl, C1-C4haloalkyloxy, C1-C4haloalkylsulfanyl and C3-C4cycloalkyl; where A is not butyl, if either R4 or R5 is methyl; and where R1 is not methyl, if each of R2, R3, R4, R5, R6, R7 and R8 is hydrogen.
EFFECT: compounds of the invention are used to improve plant endurance with respect to stress caused by abiotic factors.
9 cl, 5 tbl, 6 ex
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