From the roots of Scutellaria planipes (L.), three new flavonoids, 5,7,3′,6′-tetrahydroxy-6,8,2′-trimethoxyflavone (1), (2R,3R)-3,5,7,2′,5′-pentahydroxyflavanone (2) and 7,2′-dihydroxy-5-methoxyflavone (3) were isolated, together with ten known flavonoids, skullcapflavone I (4), wogonin (5), baicalein (6), norwogonin (7), viscidulin III (8), 5,7,2′,6′-tetrahydroxy-flavone (9), 3,5,7,2′,6′-pentahydroxyflavone (10), wogonin 7-O-β-D-glucuronide (11), baicalin (12), baicalein 7-O-β-D-glucopyranoside (13), and three phenethyl alcohol glycosides, acteoside (14), martynoside (15), and jionoside D (16). The structures were elucidated by spectroscopic methods.
5, 7, 8, 2′, Labiatae, (2R, Scutellaria planipes, 3′, 6′-tetrahydroxy-6, 2′-trimethoxyflavone, 3R)-3, 5′-pentahydroxyflavanone, 2′-dihydroxy-5-methoxyflavone
NCBI PubMed ID: 17252377Publication DOI: 10.1055/s-2006-957758Journal NLM ID: 0066751Publisher: George Thieme
Institutions: Shenyang Pharmaceutical University, Shenyang 110015, China
Methods: 13C NMR, 1H NMR
Found