In vitro: |
Natural Product Sciences, 2006, 12(4):205-209. | Revision of structures of flavanoids from Scutellaria indica and their protein tyrosine phosphatase 1B inhibitory activity.[Reference: WebLink] | METHODS AND RESULTS:
The structures of flavonoids, 2(5)-5,7-dihydroxy-8,2′- dimethoxyflavanone (1), wogonin (2), 2(5)-2',5,7-Trihydroxy-8-methoxyflavanone (3), and 2(S)-5,2′,5′-trihydroxy-7,8- dimethoxyflavanone (4), isolated from Scutellaria indica were revised on the basis of 2D NMR spectroscopy, including to gCOSY, gHSQC, and gHMBC. Compounds 1-4 were tested in vitro protein tyrosine phosphatase 1B (PTP1B) inhibitory activity.
CONCLUSIONS:
Compounds 2 and 4 exhibited weak PTP1B inhibitory activity with IC50 values of 208 and 337 μM, respectively. |
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