Sappan M.Chinthanom P.Vichai V.Boonpratuang T.Chantarojsiri T.Isaka M.Mahidol University2025-09-292025-09-292025-09-19Organic Letters Vol.27 No.37 (2025) , 10429-10434https://repository.li.mahidol.ac.th/handle/123456789/112334Sixteen undescribed triterpene glycosides, oudecanarins A-P (1-16), were isolated from cultures of basidiomycete Oudemansiella cf. canarii TBRC-BCC 85371. Oudecanarins A-G (1-7) contain a bicyclo[4.3.1]decene system bearing the bridgehead double bond as a DE ring of pentacyclic triterpene. The unique carbon skeleton was confirmed by the X-ray crystallographic analysis of oudecanarin B (2). The proposed plausible late-stage biosynthetic pathway for oudecanarin A (1) was supported by chemical conversion experiments.ChemistryBiochemistry, Genetics and Molecular BiologyArticleSCOPUS10.1021/acs.orglett.5c032962-s2.0-1050165824471523705240905912