Tyromycic Acids F and G: Two New Triterpenoids from the Mushroom Tyromyces fissilis

Abstract

Phytochemical examination of the methanol extract of the fruit bodies of the Japanese fungus Tyromyces fissilis led to the isolation of two new lanostane derivatives called tyromycic acids F (1) and G (2), together with two known compounds, tyromycic acid (3) and trametenolic acid B (4). Their structures were identified by 2D NMR, IR, and UV spectroscopy.