Xanthones and Xanthone O‐β‐D‐Glucosides from the Roots of Polygala azizsancarii Dönmez

Abstract

Nine xanthone derivatives (1 -9) were isolated from the roots of Polygala azizsancarii, which is a narrow endemic species for the flora of Türkiye. Based on all of the evidence, the structures of 1-9 were established as two previously undescribed xanthone O

Six New Constituents from the Fruit of Hypericum patulum and Their Anti‐Inflammatory Activity

“…The long correlations from H‐1 to C‐2, C‐3, C‐4a, C‐9, C‐9a, from H‐5 to C‐5a, C‐7, C‐8a, from H‐6 to C‐5a, C‐8, from H‐7 to C‐5, C‐8a, from H‐8 to C‐5a, C‐6, C‐9 were observed. All analyses suggested that 1 possessed a xanthone skeleton [14] . The methoxy was located at C‐2 based on the long correlation from δ H 3.88 (−OCH 3 ) to C‐2, and was further confirmed by NOESY spectrum, which showed cross‐peak between δ H 3.88 (−OCH 3 ) and H‐1.…”

“…The remaining carbon signals of 13 All analyses suggested that 1 possessed a xanthone skeleton. [14] The methoxy was located at C-2 based on the long correlation from δ H 3.88 (À OCH 3 ) to C-2, and was further confirmed by NOESY spectrum, which showed cross-peak between δ H 3.88 (À OCH 3 ) and H-1. The long correlation was observed between H-1' and C-4, indicating that the glucose moiety was linked to C-4.…”