| 摘要 |
The invention relates to compounds of formula (I) or to the salts thereof, wherein R1 is carboxy or carboxyl group derivatives, preferably a group of formula -CN, -C(=X)-Y-R or -C(=X)-Het, wherein X is O, S or NRa or N-NRaRb, Y is O, S, NRc or NRc-NRdRe, R is H, hydrocarbon group (KW) (subst.) or acyl a nd Het is an aliphatic N-heterocycle, in which each group Ra, Rb, Rc, Rd and Re is defined as R or a group of formula OR*, wherein R* is defined as R, R2 is H or KW (subst) or a heterocyclic group or an acyl group when Z = O or S, (R3 )n is n R3 groups, such as defined in claim 1, Z is a group of formula O or S(O)x, wherein x = 0, 1 or 2 and n is a whole number 0, 1, 2, 3 or 4. The inventive compounds are used as safeners for cultivated or useful plans for protecting them against phytotoxic effects of agriculture chemicals, preferably as safeners against pesticide and herbicide effects on said plant s.
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