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.
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).