Several new antifungal agents, including novel compounds in familiar classe
s and entirely new classes targeting previously untapped mechanisms, are in
various stages of the drug development process. Many new triazole antifung
al agents are being studied, including voriconazole, posaconazole, and ravu
conazole. The echinocandin antifungals, which represent a new class of anti
fungal agents, possess activity against a variety of fungal pathogens. The
sodarin derivatives and nikkomycins are two additional classes of antifunga
ls in early stages of development; future studies will determine their ther
apeutic usefulness.