title: Dantaxusins A and B, two new taxoids from Taxus yunnanensis.
abstract: Two new taxane diterpenes, dantaxusin A [5 alpha-cinnamoyloxy-2 alpha,7 beta,13 alpha-triacetoxy-2(3-->20)abeo-taxa-4(20),11-diene-9,10-dione (1)] and dantaxusin B [5 alpha-cinnamoyloxy-9 alpha-hydroxy-10 beta,13 alpha-diacetoxytaxa-4(20),11-diene (2)], were isolated from an ethanol extract of the aerial parts of Taxus yunnanensis along with taxuspine B, 2-deacetoxytaxinine J, taxuyunnanine C, taxinine B, taxuspine C, and taxinine NN-4. The structures of 1 and 2 were established on the basis of 1D and 2D NMR and HRMS spectroscopic methods.
authors.affiliation: Department of Interdisciplinary Studies of Natural Environment, Faculty of Integrated Arts and Sciences, Hiroshima University, Higashi-Hiroshima 739-8521, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Shinozaki
authors.forename: N
authors.initials: N
authors.lastname: Fukamiya
authors.forename: M
authors.initials: M
authors.lastname: Fukushima
authors.forename: M
authors.initials: M
authors.lastname: Okano
authors.forename: T
authors.initials: T
authors.lastname: Nehira
authors.forename: K
authors.initials: K
authors.lastname: Tagahara
authors.forename: S X
authors.initials: SX
authors.lastname: Zhang
authors.forename: D C
authors.initials: DC
authors.lastname: Zhang
authors.forename: K H
authors.initials: KH
authors.lastname: Lee
mesh_terms: D002681:China; D002851:Chromatography, High Pressure Liquid; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D017239:Paclitaxel / Q000031:analogs & derivatives / Q000737:chemistry / Q000302:isolation & purification*; D018515:Plant Leaves / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet; D013237:Stereoisomerism; D043823:Taxoids
chemical_list: D043823:Taxoids; C436525:dantaxusin A; C436524:dantaxusin B; D017239:Paclitaxel