A new grayanane diterpenoid from Rhododendron decorum.
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.
Zhang
Wei Dong
WD
School of Pharmacy, Shanghai Jiaotong University, Shanghai 200240, PR China. wdzhangy@hotmail.com
Jin
Hui Zi
HZ
Chen
Gang
G
Li
Xue Feng
XF
Yan
Shi Kai
SK
Zhang
Lu
L
Shen
Yun Heng
YH
Yang
Ming
M
D004224:Diterpenes / Q000737:chemistry* / Q000302:isolation & purification*; D015394:Molecular Structure; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification*; D029793:Rhododendron / Q000737:chemistry*
D004224:Diterpenes; D010936:Plant Extracts; C539400:craiobiotoxin IX; C539401:grayanotoxin IV; C001311:grayanotoxin I