%0 Journal Article
%T A New Sulfated ¦Á-Ionone Glycoside from Sonchus erzincanicus Matthews
%A Ufuk Ozgen
%A Handan Sevindik
%A Cavit Kazaz
%A Demet Yigit
%A Ali Kandemir
%A Hasan Secen
%A Ihsan Calis
%J Molecules
%D 2010
%I MDPI AG
%R 10.3390/molecules15042593
%X Sonchus erzincanicus (Asteraceae) is an endemic species in Turkey, where six Sonchus species grow. In this study, a phytochemical study was performed on the aerial parts of the plant. The study describes the isolation and structure elucidation of five flavonoids and two a-ionone glycosides from S. erzincanicus. The compounds were isolated using several and repeated chromatographic techniques from ethyl acetate and aqueous phases that were partitioned from a methanol extract obtained from the plant. 5,7,3',4'-Tetrahydroxy-3-methoxyflavone (1) and quercetin 3-O-¦Â-D-glucoside (2) were isolated from the ethyl acetate phase, while corchoionoside C 6¡¯-O-sulfate (3), corchoionoside C (4), luteolin 7-O-glucuronide (5) and luteolin 7-O-¦Â-D-glucoside (6), apigenin 7-O-glucuronide (7) were isolated from the aqueous phase. Corchoionoside C 6¡¯-O-sulfate (3), isolated for the first time from a natural source, was a new compound. The structures of the compounds were elucidated by means of 1H-NMR, 13C-NMR, 2D-NMR (COSY, HMQC, HMBC) and ESI-MS.
%K asteraceae
%K flavonoids
%K ¦Á-ionone glycoside
%K Sonchus erzincanicus
%U http://www.mdpi.com/1420-3049/15/4/2593