title: A new grayanane diterpenoid from Rhododendron decorum.
abstract: A new grayanane diterpenoid, 2,3-epoxy-5beta,6beta,10alpha,13beta,16alpha-pentahydroxy-grayanane, named craiobiotoxin IX (1), together with the known grayanotoxins I and IV, was isolated from the aerial part of Rhododendron decorum. The structure was elucidated on the basis of spectroscopic and X-ray diffraction analysis.
authors.affiliation: School of Pharmacy, Shanghai Jiaotong University, Shanghai 200240, PR China. wdzhangy@hotmail.com
authors.forename: Wei Dong
authors.initials: WD
authors.lastname: Zhang
authors.forename: Hui Zi
authors.initials: HZ
authors.lastname: Jin
authors.forename: Gang
authors.initials: G
authors.lastname: Chen
authors.forename: Xue Feng
authors.initials: XF
authors.lastname: Li
authors.forename: Shi Kai
authors.initials: SK
authors.lastname: Yan
authors.forename: Lu
authors.initials: L
authors.lastname: Zhang
authors.forename: Yun Heng
authors.initials: YH
authors.lastname: Shen
authors.forename: Ming
authors.initials: M
authors.lastname: Yang
mesh_terms: D004224:Diterpenes / Q000737:chemistry* / Q000302:isolation & purification*; D015394:Molecular Structure; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification*; D029793:Rhododendron / Q000737:chemistry*
chemical_list: D004224:Diterpenes; D010936:Plant Extracts; C539400:craiobiotoxin IX; C539401:grayanotoxin IV; C001311:grayanotoxin I