[Isolation and identification of four new tetracyclic-atxanes from Taxus yunnanensis].
Four new minor toxoids, named as taxayuntin A, B, C and D, have been isolated from the ethanolic extract of the bark of Taxus yunnanensis Cheng et L. K. Fu. Their structures were identified as the new taxane diterpenoids with 5/7/6/4 membered ring system by spectral means and 2D NMR shift correlation experiments.
Chen
W M
WM
Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050.
Zhang
P L
PL
Zhou
J Y
JY
Fang
Q C
QC
D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification*; D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D015394:Molecular Structure; D010946:Plants, Medicinal; D020946:Taxus / Q000737:chemistry*
D004224:Diterpenes; D004365:Drugs, Chinese Herbal