Synthesis of novel pyrazole carboxamide derivatives and discovery of modulators for apoptosis or autophagy in A549 lung cancer cells.

A series of novel 3-aryl-1-arylmethyl-1H-pyrazole-5-carboxamide derivatives 3a-l, were synthesized by the reaction of 3-aryl-1-arylmethyl-1H-pyrazole-5-carbonyl chloride with substituted amine in excellent yields. The compounds 3e-h could suppress A549 lung cancer cell growth. More interestingly, compounds 3e and 3f might inhibit the A549 cell growth by inducing apoptosis; whereas compounds 3g and 3h with fluorine group might inhibit the A549 cell growth by inducing autophagy.