Structure elucidation of a new lanostane triterpene from Gabonese Ganoderma orbiforme fruiting bodies

Abstract The structure and complete nuclear magnetic resonance (NMR) assignments of orbifomitellic acid, a novel lanostane triterpene isolated from the fruiting bodies of a Gabonese Ganoderma orbiforme (Polyporaceae), are reported. Within the vast catalogue of lanostanes documented from Ganoderma spp., orbifomitellic acid is the first disclosing a –COOH group at C‐4.