Phenylethanoid glycosides from the roots of Phlomis umbrosa

Abstract

The phytochemical study of the roots of Phlomis umbrosa Turcz. afforded three new phenylethanoid glycosides, 3‴-acetyl-O-betonyoside D (1), 2‴, 3‴-di-acetyl-O- betonyoside D (2), and 3‴, 4‴-di-acetyl-O-betonyoside D (3), along with five known phenylethanoid glycosides. Their structures were elucidated on the basis of spectroscopic data. The antitumor activity of the isolated compounds was investigated.

Keywords:

• Phlomis umbrosa Turcz
• 3‴-acetyl-O-betonyoside D
• 2‴,3‴-di-acetyl-O-betonyoside D
• 3‴,4‴-di-acetyl-O-betonyoside D
• phenylethanoid glycosides

Acknowledgements

The Project was supported by the fund for Doctor of Henan University of Science and Technology.