Claim 1: A compound characterized in that it is of the general formula (1) wherein: R¹ and R² are different or equal and are independently selected from the group consisting of: H； linear or branched C₁₋₆ alkyl, optionally substituted with one or more substituents selected from C₃₋₇ cycloalkyl and C₅₋₇ cycloalkenyl；a. Halogenated tar c83218d31832626；C₃₋₇ cycloalkyl；C₅₋₇ cycloalkenyl；linear or branched C₂₋₆ alkenyl； and C₂₋₆ linear or branched alkynyl； R³ is H or represents one or more substituents independently selected from the group consisting of CN, NO₂,CF 8323 and halogen atom； Z is a group (ch832244)； m = 0 or 1； a is a phenyl ring, which can be optionally replaced by one or more r83088 substitutes；which may be the same or different and are independently selected from the group consisting of: linear or branched C₁₋₆ alkyl optionally substituted with one or more C₃₋₇ cycloalkyl or C₃₋₇ heterocycloalkyl；a. Halogenated tar c83218d31832626；1. C8332121 asphalt；Keywords halogen； nh832222；and OR⁷ where R⁷ is selected from the group consisting of H； C₁₋₁₀ alkyl optionally substituted with a radical selected from C₃₋₇ cycloalkyl,C₃₋₇ heterocycloalkyl,aryl and heteroaryl； C₁₋₁₀ alkyl substituted with an OH group； C₁₋₆ haloalkyl；C₃₋₇ cycloalkyl；C₁₋₄-aminocarbonyl alkyl； C₁₋₄oxycarbonyl alkyl； C₃₋₇ heterocycloalkyl optionally substituted with C₁₋₄ alkyl；and R⁵R⁶N-C₁₋₁₀ alkylene where R⁵ and R⁶ are independently selected from the group consisting of H, linear or branched C₁₋₆ alkyl or, with the nitrogen atom to which they are attached, form a saturated, partially saturated ring or unsaturated, where these rings are optionally substituted with C₁₋₄ alkyl,halogen atoms or R⁷R⁸N-C al alkylene where R⁷ and R⁸ are different or equal and are independently selected from the group consisting of H, linear or branched C₁₋₆ alkyl or, with the nitrogen atom to which they are attached , form a saturated or partially saturated ring； W is selected from the group consisting of: -NR⁹SO₂R¹⁰
