New Flavonoids of the Genus Scutellaria. I. Scutellarisides I and II from S. titovii and S. catharinae
摘要
The composition of phenolic compounds from Scutellaria titovii Juz. and S. catharinae Juz. (Lamiaceae) growing in Kazakhstan was studied for the first time. A total of 26 known compounds and two new O-glycosylflavones (1 and 2) were detected. The new flavonoids were elucidated as 5,7,2′-trihydroxy-6-methoxyflavone 7,2′-di-O-β-D-glucuronopyranoside (scutellariside I, 1) and 5,6,7,4′-tetrahydroxyflavanone 7,4′-di-O-β-D-glucuronopyranoside (scutellariside II, 2) using UV and NMR spectroscopy and mass spectrometry.