(2S,3S)-3-Hydroxy-2-methyl-butanoic Acid Methyl Ester is an intermediate in the synthesis of (+)-Echimidine N-Oxide, which is a a hepatotoxic pyrrolizidine alkaloid. Different extracts and echimidine-N-oxide from Symphytum sylvaticum Boiss. Subsp. sepulcrale, has been shown to have Antifungal activity.