Chemical constituents from roots of Taraxacum formosanum.
Two new compounds, taraxafolide (1) and (+)-taraxafolin-B (2) together with eighteen known compounds, which include one sesquiterpene, thirteen benzenoids, two indole alkaloids, one pyridine derivative and steroid mixtures were isolated and characterized from the fresh roots of Taraxacum formosanum. Structures of new compounds were determined by spectral analysis. (+)-Taraxafolin-B had the bioactive caffeic acid moiety, but its activity was weaker than alpha-tocopherol in DPPH radicals scavenging activity assay.
Leu
Yann-Lii
YL
Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan, Taiwan. ylleu@mail.cgu.edu.tw
Wang
Yu-Li
YL
Huang
Shih-Chin
SC
Shi
Li-Shian
LS
D015394:Molecular Structure; D018517:Plant Roots / Q000737:chemistry*; D013057:Spectrum Analysis / Q000379:methods; D031205:Taraxacum / Q000737:chemistry*