Novel flavonoids of Thelypteris torresiana.
In our continuing research on cytotoxic components from the Formosan pteridophyte Thelypteris torresiana (GAUD.) ALSTONONE, two new compounds, a novel flavonoid, flavotorresin (1), and a flavonoid diglycoside, multiflorin C (2), along with five known compounds, were isolated. The structural elucidation was established on the basis of spectroscopic data analysis. The possible biosynthetic pathway of the flavonoids from this fern is summarized.
Lin
An-Shen
AS
Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung, Taiwan.
Chang
Fang-Rong
FR
Yen
Hsin-Fu
HF
Björkeborn
HannaMaria
H
Norlén
Per
P
Wu
Yang-Chang
YC
D029624:Ferns / Q000737:chemistry*; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification*; D013057:Spectrum Analysis / Q000379:methods
D005419:Flavonoids