title: Friedolanostane, friedocycloartane and benzophenone constituents of the bark and leaves of Garcinia benthami.
abstract: Friedolanostanes, (22Z,24E)-3β-acetoxy-9α-hydroxy-17,14-friedolanosta-14,22,24-trien-26-oic acid, (22Z,24E)-3β,9α-dihydroxy-17,14-friedolanosta-14,22,24-trien-26-oic acid, (22Z,24E)-9α-hydroxy-3-oxo-17,14-friedolanosta-14,22,24-trien-26-oic acid, a friedocycloartane, (22Z,24E)-3α-hydroxy-17,13-friedocycloarta-12,22,24-trien-26-oic acid, and a benzophenone, benthaphenone, together with known compounds (22Z,24E)-3α,9α-dihydroxy-17,13-friedolanosta-12,22,24-trien-26-oic acid, methyl (24E)-3α,23-dihydroxy-17,14-friedolanosta-8,14,24-trien-26-oate, glutinol, lupeol, and stigmasterol, were isolated from leaves and bark of Garcinia benthami. Their structures were elucidated using spectroscopic techniques, mainly 1-D and 2-D NMR spectroscopy, and chemical correlations.
authors.affiliation: Faculty of Chemistry, Ho Chi Minh City University of Science (HCMUS), Ho Chi Minh City, Viet Nam.
authors.forename: Hiep D
authors.initials: HD
authors.lastname: Nguyen
authors.forename: Binh T D
authors.initials: BT
authors.lastname: Trinh
authors.forename: Quyen N
authors.initials: QN
authors.lastname: Tran
authors.forename: Hoan D
authors.initials: HD
authors.lastname: Nguyen
authors.forename: Hung D
authors.initials: HD
authors.lastname: Pham
authors.forename: Poul Erik
authors.initials: PE
authors.lastname: Hansen
authors.forename: Fritz
authors.initials: F
authors.lastname: Duus
authors.forename: Joseph D
authors.initials: JD
authors.lastname: Connolly
authors.forename: Lien-Hoa D
authors.initials: LH
authors.lastname: Nguyen
mesh_terms: D001577:Benzophenones / Q000737:chemistry / Q000302:isolation & purification*; D029760:Garcinia / Q000737:chemistry*; D007810:Lanosterol / Q000031:analogs & derivatives* / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D024301:Plant Bark / Q000737:chemistry; D018515:Plant Leaves / Q000737:chemistry; D013237:Stereoisomerism; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D014744:Vietnam
chemical_list: D001577:Benzophenones; D014315:Triterpenes; D007810:Lanosterol; C085352:cycloartane; C047723:benzophenone