Antifungals

Voriconazole is a synthetic, lipophilic molecule that is used in the treatment of fungal infections. Voriconazole binds to ergosterol which is the major sterol in the cell wall of fungi and inhibits its synthesis, leading to cell death. This drug binds to the enzyme 14α-demethylase allowing the conversion of lanosterol into ergosterol. As a result, this binding leads to the inhibition of ergosterol synthesis, as well as other sterols that are necessary for fungal growth (e.g., squalene).

Abafungin is an antifungal agent and is used for treating fungal infections.

Malformin C is a cyclic pentapeptide, which is a secondary metabolite derived from certain strains of the fungus Aspergillus. Its mode of action involves disrupting cellular processes by interfering with cell division. Specifically, it is thought to affect mitotic spindle formation, leading to abnormal cell cycle progression.

21-Norrapamycin is a macrocyclic lactone antibiotic, which is derived from the bacterium Streptomyces hygroscopicus. Its chemical structure is closely related to that of rapamycin, a well-known immunosuppressant. The mode of action of 21-Norrapamycin involves the inhibition of the mechanistic target of rapamycin (mTOR) signaling pathway. By binding to the FK506-binding protein 12 (FKBP12), it forms a complex that then inhibits mTOR, a crucial regulator of cell growth, proliferation, and survival.