To provide an antibacterial agent, particularly a novel polypeptide compound having an antifungal activity or a salt thereof. The present inventors considered a novel antibacterial agent and found that excellent antifungal activity can be achieved by introducing a benzoyl group having a cyclic substituent at the carbonyl ortho position, as a partial structure for a natural polypeptide compound, thereby completing the present invention. This polypeptide compound has excellent antifungal activity and can be used as a prophylactic and/or a therapeutic agent for various fungal infections.
