A compound of Formula (I-K): ** Formula ** in which: X1 is CH； X2 is N； X3 is CH； X4 is CH； Ra and Rb are both CH3； M is C1-3 alkyl； Y1 is CR1； Y2 is CR2； R1 is H, CF3, CH3, OCH3, F or Cl； R2 is H, methyl, ethyl, propyl, isopropyl, tert-butyl, cyclopropyl, cyclobutyl, CF3, OH, OCH3, ethoxy, SH, SCH3, SCH2CH3, CH2OH, C (CH3) 2OH, Cl, F, CN, COOH, COOR2 ', CONH2, CONHR2' or SO2NH2； where R2 'is H or C1-3 alkyl； n is 1, 2, 3 or 4； R5 is independently selected from H, methyl, ethyl, propyl, isopropyl, tert-butyl, cyclopropyl, cyclobutyl, CF3, OH, OCH3, ethoxy, SH, SCH3, SCH2CH3, CH2OH, C (CH3) 2OH, Cl, F, CN , COOH, COOR5 ', CONH2, CONHR5' or SO2NH2； where R5 'is H or C1-3 alkyl.Un compuesto de Fórmula (I-K):**Fórmula** en el que: X1 es CH； X2 es N； X3 es CH； X4 es CH； Ra y Rb son ambos CH3； M es alquilo de C1-3； Y1 es CR1； Y2 es CR2； R1 es H, CF3, CH3, OCH3, F o Cl； R2 es H, metilo, etilo, propilo, isopropilo, terc-butilo, ciclopropilo, ciclobutilo, CF3, OH, OCH3, etoxi, SH, SCH3, SCH2CH3, CH2OH, C(CH3)2OH, Cl, F, CN, COOH, COOR2', CONH2, CONHR2' o SO2NH2； donde R2' es H o alquilo de C1-3； n es 1, 2, 3 o 4； R5 se selecciona independientemente entre H, metilo, etilo, propilo, isopropilo, terc-butilo, ciclopropilo, ciclobutilo, CF3, OH, OCH3, etoxi, SH, SCH3, SCH2CH3, CH2OH, C(CH3)2OH, Cl, F, CN, COOH, COOR5', CONH2, CONHR5' o SO2NH2； donde R5' es H o alquilo de C1-3.
