Abstract
Two new dihydrostilbenes, stilbostemins H (1), I (2), and a new dihydrophenanthrene, stemanthrene E (3), were isolated and identified from the roots of Stemona sessilifolia, together with known stilbostemins B, D and G, and stemanthrenes A and C (4–8). Structures of new stilbenoids were established by 1D and 2D 1H NMR and 13C NMR spectroscopic analyses.
Acknowledgement
This work was supported by a grant from National Natural Science Foundation of China (No. 30123005).