Abstract: The present invention relates to a derivative compound in which a biphenyl group is introduced into an aminoalkanoic acid, a stereoisomer thereof, or a pharmaceutically acceptable salt thereof. The compound of the present invention exhibits excellent antifungal and fungicidal effects. Furthermore, the compound of the present invention exhibits a synergistic effect when used in combination with a conventional antifungal agent. Furthermore, the compound of the present invention provides broad-spectrum antifungal activity against a wide range of fungal pathogens. Therefore, the compound of the present invention may be widely used in fields requiring treatment with antifungal or fungicidal agents against human pathogenic fungi and animal pathogenic fungi, and phytopathogenic fungi.