title: Lanostanes and friedolanostanes from the pericarp of Garcinia hombroniana.
abstract: The CH2Cl2 extract from the pericarp of Garcinia hombroniana yielded three 17,14-friedolanostanes [(24E)-3alpha-hydroxy-17,14-friedolanostan-8, 14,24-trien-26-oic acid, methyl (24E)-3alpha,23-dihydroxy-17,14-friedolanostan-8,14,24 -trien-26-oate and methyl (24E)-3alpha,9,23-trihydroxy-17,14-friedolanostan-14,2 4-dien-26-oate] and two lanostanes [3beta- and 3alpha-hydroxy-23-oxo-9,16-lanostadien-26-oic acid]. The structure of (14E)-3alpha-hydroxy-17,14-friedolanostan-8,14,24-trie n-26-oic acid was determined using spectroscopic and X-ray analyses, while the structures of the other compounds were elucidated solely from analysis of spectroscopic data.
authors.affiliation: Department of Chemistry, Faculty of Science, Prince of Songkhla University, Hat Yai, Thailand. rvatchar@ratree.psu.ac.th
authors.forename: V
authors.initials: V
authors.lastname: Rukachaisirikul
authors.forename: A
authors.initials: A
authors.lastname: Adair
authors.forename: P
authors.initials: P
authors.lastname: Dampawan
authors.forename: W C
authors.initials: WC
authors.lastname: Taylor
authors.forename: P C
authors.initials: PC
authors.lastname: Turner
mesh_terms: D019684:Magnoliopsida / Q000737:chemistry*; D015394:Molecular Structure; D013057:Spectrum Analysis; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D014315:Triterpenes