Two new dammarane-type glycosides from Phlomis umbrosa

Abstract

Two new dammarane-type glycosides, phlomisumbroside A (1) and phlomisumbroside B (2), together with 15 known compounds (3–17) were isolated from the leaves of Phlomis umbrosa Turcz. Their structures were established by the spectroscopic methods including 2D NMR techniques.

Keywords::

• Labiatae
• Phlomis umbrosa
• phlomisumbroside A
• phlomisumbroside B

Acknowledgements

This work was supported by the National Natural Science Foundation of China (No. 81172953) and the Natural Science Foundation of Henan Province (No. 102102310011).