title: Two new sesquiterpene polyol esters from the root barks of Celastrus angulatus.
abstract: Angulatin F (1) and angulatin I (2), two new sesquiterpene polyol esters, were isolated from the root barks of Celastrus angulatus, together with six known compounds 1β,2β-diacetoxy-4α,6α-dihydroxy-8α-isobutanoyloxy-9β-benzoyloxy-15-(α-methyl) butanoyloxy-β-dihydroagrofuran (3), angulatin A (4), angulatin B (5), celangulatin E (6), 1β,2β,15-triacetoxy-4α,6α-dihydroxy-8α-isobutanoyloxy-9β-benzoyloxy-β-dihydroagrofuran (7), and celangulin I (8). The structures of 1 and 2 were elucidated as 1β,2β,6α,15-tetraacetoxy-4α-hydroxy-8β,9α-difuroyloxy-β-dihydroagrofuran and 1β,2β,6α,8β,15-pentaacetoxy-4α-hydroxy-9β-furoyloxy-β-dihydroagrofuran by spectroscopic means.
authors.affiliation: Post Doctor Working Station, Henan Academy of Sciences, Zhengzhou, China.
authors.forename: Hai-Yan
authors.initials: HY
authors.lastname: Zhang
authors.forename: Tian-Zeng
authors.initials: TZ
authors.lastname: Zhao
authors.forename: Yue
authors.initials: Y
authors.lastname: Wei
authors.forename: Hong-Min
authors.initials: HM
authors.lastname: Liu
mesh_terms: D031247:Celastrus / Q000737:chemistry*; D004365:Drugs, Chinese Herbal / Q000737:chemistry* / Q000302:isolation & purification*; D004952:Esters; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D024301:Plant Bark / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry; D012717:Sesquiterpenes / Q000737:chemistry* / Q000302:isolation & purification*; D013237:Stereoisomerism
chemical_list: D004365:Drugs, Chinese Herbal; D004952:Esters; D012717:Sesquiterpenes; C558551:angulatin F; C558552:angulatin I