Stilbenoids from Stemona sessilifolia

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.

Keywords:

• Stemona sessilifolia
• Stilbenoids
• Stilbostemins H-I
• Stemanthrene E

Acknowledgement

This work was supported by a grant from National Natural Science Foundation of China (No. 30123005).