title: Taxane diterpenoids from the bark of Taxus yunnanensis.
abstract: Further investigation on the alcohol extract of the barks of Taxus yunnanensis led to the isolation of four taxoids, namely, 7beta-xylosyl-taxol D, taxuyunnanines P, Q and R, along with the known taxuyuntin G (2). Four are rearranged taxoids with an 11(15-->1)-abeotaxoid skeleton and an opened oxetane ring moiety. Structures were determined by spectroscopic and chemical means.
authors.affiliation: Laboratory of Phytochemistry, Kunming Institute of Botany, Academia Sinica, Kunming 650204, Yunnan, China.
authors.forename: S
authors.initials: S
authors.lastname: Li
authors.forename: H
authors.initials: H
authors.lastname: Zhang
authors.forename: P
authors.initials: P
authors.lastname: Yao
authors.forename: H
authors.initials: H
authors.lastname: Sun
authors.forename: H H
authors.initials: HH
authors.lastname: Fong
mesh_terms: D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D013057:Spectrum Analysis; D020946:Taxus / Q000737:chemistry*
chemical_list: D004224:Diterpenes