A New Cyclic Tetrapeptide from the Jellyfish-Derived Fungus <i>Phoma</i> sp.

Abstract

A new cyclic tetrapeptide (1), along with known congeners (2, 3), was isolated from the fungus Phoma sp. derived from the giant jellyfish Nemopilema nomurai. The absolute configuration of 1 was determined using the modified Mosher's method and Marfey's method. Compound 1 displayed a weak suppressive effect on the production of nitric oxide (NO) in murine macrophage cells (RAW264.7) without notable cytotoxicity.