title: Two new taxoids from the leaves and stems of Taxus chinensis.
abstract: Two new taxoids called 7,13-dideacetyl-9,10-debenzoyl-7beta,9alpha-p-hydroxylbenzylidenedioxy-taxchinin C (1) and 7,13-dideacetyl-2,9,10-debenzoyl-2-tigloyl-7beta,9alpha-p-hydroxylbenzylidenedioxy-taxchinin C (2) were isolated from the leaves and stems of Taxus chinensis. They represent the first examples of taxoids containing the 5/7/6-membered ring system with 7beta,9alpha-p-hydroxylbenzylidenedioxy groups, the structures of which were elucidated based on spectroscopic analyses, especially 1D and 2D NMR spectra.
authors.affiliation: College of Pharmacy, Dali University, PR, China. fshwdl@yahoo.com.cn
authors.forename: Fu-Sheng
authors.initials: FS
authors.lastname: Wang
authors.forename: Gui-Rong
authors.initials: GR
authors.lastname: Shi
mesh_terms: D009682:Magnetic Resonance Spectroscopy; D018515:Plant Leaves / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry; D043823:Taxoids / Q000737:chemistry* / Q000302:isolation & purification; D020946:Taxus / Q000737:chemistry*
chemical_list: C545021:7,13-dideacetyl-9,10-debenzoyl-7beta,9alpha-p-hydroxylbenzylidenedioxy-taxchinin C; D043823:Taxoids