Phenolic Compounds from Scutellaria pontica

Authors: TAYFUN ERSÖZ, Ü. ŞEBNEM HARPUT, İCLAL SARACOĞLU, İHSAN ÇALIŞ, YUKIO OGIHARA

Abstract: From the aerial parts of Scutellaria pontica, a phenolic glucoside, 3,5-dihydroxyphenyl \beta -D-glucopyranoside (1); as well as a C-glucosyl flavon, isovitexin (2); flavones and flavone glycosides, 5-hydroxy-7,3',4'-trimethoxyflavone (3); apigenin (4); apigenin-7-O-\beta-D-glucopyranoside (5); and apigenin-7-O-\beta-D-glucopyranoside-4'-O-methylether (6) were isolated in addition to two phenylethanoid glycosides, martynoside (7) and verbascoside (= acteoside) (8). The structures of the isolated compounds were established on the basis of spectroscopic evidence.

Keywords: Scutellaria pontica, Lamiaceae, 3,5-dihydroxyphenyl \beta -D-glucopyranoside, isovitexin, 5-hydroxy-7,3',4'-trimethoxyflavone, apigenin, apigenin-7-O-\beta \)-D-glucopyranoside, apigenin-7-O-\beta-D-glucopyranoside-4'-O-methylether, martynoside, verbascoside (= acteoside).

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