Natural antifungal compounds from the peels of <i>Ipomoea batatas </i>Lam

<p>Three antifungal compounds have been isolated for the first time from the peels of <i>Ipomoea batatas</i> Lam. Their structures were established on the basis of 1D and 2D NMR spectra data as well as ESI-MS and IR analysis. Urs-13(18)-ene-3β-yl acetate was found to possess a weak activity against <i>Sporothrix schenckii</i> and <i>Trichophyton metagrophytes</i> fungi with an MIC value of 50 μg/mL each. Stigmasterol and 3-friedelanol were equally active against <i>T. metagrophytes.</i></p