Abstract: 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-β-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-β-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.
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Ozgen, U.; Sevindik, H.; Kazaz, C.; Yigit, D.; Kandemir, A.; Secen, H.; Calis, I. A New Sulfated α-Ionone Glycoside from Sonchus erzincanicus Matthews. Molecules 2010, 15, 2593-2599.
Ozgen U, Sevindik H, Kazaz C, Yigit D, Kandemir A, Secen H, Calis I. A New Sulfated α-Ionone Glycoside from Sonchus erzincanicus Matthews. Molecules. 2010; 15(4):2593-2599.
Ozgen, Ufuk; Sevindik, Handan; Kazaz, Cavit; Yigit, Demet; Kandemir, Ali; Secen, Hasan; Calis, Ihsan. 2010. "A New Sulfated α-Ionone Glycoside from Sonchus erzincanicus Matthews." Molecules 15, no. 4: 2593-2599.