title: Cassane- and norcassane-type diterpenes of Caesalpinia crista from Myanmar.
abstract: From the CH(2)Cl(2) extract of seed kernels of Caesalpinia crista from Myanmar, five new cassane-type diterpenes, caesalpinins MA-ME (1-5), and three new norcassane-type diterpenes, norcaesalpinins MA-MC (6-8), have been isolated, together with 12 known cassane-type diterpenes, 14(17)-dehydrocaesalmin F, caesaldekarin e, caesalmin B, caesalmin C, caesalmin E, 2-acetoxy-3-deacetoxycaesaldekarin e, 2-acetoxycaesaldekarin e, caesalpinin C, 7-acetoxybonducellpin C, caesalpinin E, norcaesalpinin B, and 6-acetoxy-3-deacetoxycaesaldekarin e. The structures of the isolated compounds were elucidated by analysis of their spectroscopic data.
authors.affiliation: Institute of Natural Medicine, Toyama Medical and Pharmaceutical University, 2630 Sugitani, Toyama 930-0194, Japan.
authors.forename: Surya K
authors.initials: SK
authors.lastname: Kalauni
authors.forename: Suresh
authors.initials: S
authors.lastname: Awale
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Tezuka
authors.forename: Arjun H
authors.initials: AH
authors.lastname: Banskota
authors.forename: Thein Zaw
authors.initials: TZ
authors.lastname: Linn
authors.forename: Shigetoshi
authors.initials: S
authors.lastname: Kadota
mesh_terms: D029911:Caesalpinia / Q000737:chemistry*; D004224:Diterpenes / Q000737:chemistry* / Q000302:isolation & purification*; D015394:Molecular Structure; D002052:Myanmar; D019906:Nuclear Magnetic Resonance, Biomolecular; D010946:Plants, Medicinal / Q000737:chemistry*; D012639:Seeds / Q000737:chemistry
chemical_list: D004224:Diterpenes