[Flavonoids from Scutellaria baicalensis and their bioactivities].
OBJECTIVE
To study the flavonoids of Scutellaria baicalensis and their bioactivities.


METHODS
Chromatographic methods were used to separate compounds, spectral methods were used to determine the structures and bioactivities of the flavonoids were screened in several models in vitro.


RESULTS
Nine compounds were isolated and identified as baicalein (1), wogonin (2), oroxylin A (3), 5, 7, 2', 6'-tetrahydroxyflavone (4), viscidulin III (5), baicalin (6), wogonoside (7), oroxylin A-7-O-beta-D-glucuronide (8) and chrysin-6-C-alpha-L-arabinopyranosyl-8-C-beta-D-glucopyranoside (9).


CONCLUSIONS
Baicalein had good anti-bacteria activity, and some compounds showed inhibiting activity against IL-1beta converting enzyme. The 13C NMR data of compounds 9 were assigned correctly by 2D nuclear magnetic resonance (NMR).
Zhou
Xi Qin
XQ
State Key Laboratory of Natural and Biomimetic Drugs, Peking University School of Pharmaceutical Sciences, Beijing 100191, China.
Liang
Hong
H
Lu
Xin Hua
XH
Cai
Shao Qing
SQ
Wang
Bin
B
Zhao
Yu Ying
YY
D000900:Anti-Bacterial Agents / Q000302:isolation & purification* / Q000494:pharmacology; D061945:Caspase Inhibitors; D044950:Flavanones / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D005960:Glucosides / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D031364:Scutellaria baicalensis / Q000737:chemistry*
D000900:Anti-Bacterial Agents; D061945:Caspase Inhibitors; D044950:Flavanones; D005419:Flavonoids; D005960:Glucosides; C006680:baicalein; C080669:5,7-dihydroxy-6-methoxy-2-phenylchromen-4-one; C473995:wogonoside