Abstract: A method and corresponding pharmaceutical composition for inhibiting the growth of fungi. The method uses an antifungal composition containing as the active ingredient one or more nylon-3 copolymers having a formula: or a salt thereof, wherein: each R is independently hydrogen or C1-C6-alkyl; each R1, R3, R4, R5, and R6 are each independently selected from the group consisting of hydrogen or substituted or unsubstituted C1-C6-alkyl; each R2 is C1-C6-alkylene; “A” is hydrogen or an amino-protecting group; “B” is hydroxyl or a carboxy-protecting group; and “X,” “Y,” and “Z” are positive numbers.