New chlorogenic acid derivatives and triterpenoids from Scorzonera aucheriana

Authors: İSHAK ERİK, KAMİL ÇOŞKUNÇELEBİ, SERDAR MAKBUL, NURETTİN YAYLI

Abstract: Chromatographic separation of n-hexane and ethyl acetate fraction of a crude methanol extract obtained from aerial parts of the Scorzonera aucheriana DC collected from Sivas province of Turkey yielded nine natural compounds; two new 3-caffeoyl-quinic acid analogs (1-2), one new taraxasterol oleate (3), and six known triterpenoids taraxasterol (4), taraxasterol acetate (5), ptiloepoxide (6), lupeol (7), lupeol acetate (8), and β-sitosterol (9) were characterized. The structures of the isolated compounds were elucidated on the basis of NMR (¹H, ¹³C, COSY, HMBC, HSQC, and TOCSY), UV, FT-IR and LC-Q-TOF-MS spectrometric data.

Keywords: Scorzonera aucheriana, chlorogenic acid analogs, triterpenes

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