Abstract Three tridentate N, N-bis (3, 5-dimethylpyrazol-1-ylmethyl)-1-hydroxy-2- aminoethane (2), N, N-bis (3, 5-dimethylpyrazol-1-ylmethyl)-cyclohexylamine (3) and 2-[bis (1, 5-dimethyl-1 H-pyrazol-3-ylmethyl) amino] ethan-1-ol (4) are synthesized and spectroscopically characterized together with 1-hydroxymethyl-3, 5-dimethylpyrazole (1). These have been tested in inhibitory activities against various hyperactive enzymes like ...