A method for controlling yeast-to-filamentous growth transition in fungi comprising contacting a fungal cell with an anti-fungal small molecule in an amount effective to reduce or inhibit the yeast-to-filamentous growth transition, wherein the anti-fungal small molecule is 5-(p-Bromobenzylidine)-α-isopropyl-4-oxo-2-thioxo-3-thiozolidineacetic acid or an analog thereof. A method for treating fungal infections comprising contacting one or more fungal cells with an anti-fungal small molecule in an amount effective to control the fungal infection, wherein the anti-fungal small molecule is 5-(p-Bromobenzylidine)-α-isopropyl-4-oxo-2-thioxo-3-thiozolidineactic acid or an analog thereof.