As part of our continuing search for potential anticancer drug candidates in YC-1 analogs, several 1-benzyl-3-(substituted aryl)-5-methylfuro [3, 2-c] pyrazoles were synthesized and evaluated for their cytotoxicity against HL-60 cell line. Among these compounds, 1-benzyl-3- (5-hydroxymethyl-2-furyl)-5-methylfuro [3, 2-c] pyrazole (1) showed more potency than YC-1. Through investigation of action mechanism, it was found that compound 1 induced ...