High-throughput phenotypic screening against yeast Saccharomyces cerevisiae revealed a series of triazolo-pyrimidine-sulfonamide compounds with broad-spectrum antifungal activity, no significant cytotoxicity, and low protein binding. To elucidate the target of this series we have applied a chemogenomic profiling approach using the S. cerevisiae deletion collection. All compounds of the series yielded highly similar profiles that suggested acetolactate synthase (Ilv2p, catalyzes the first common step in branched chain amino acid biosynthesis) as a possible target. High correlation...