Two new ent-labdane diterpenoid glycosides from the aerial parts of Andrographis paniculata

Abstract

Two new ent-labdane diterpenoid glycosides were isolated from the aerial parts of Andrographis paniculata. Their structures were elucidated as 3-O-β-d-glucosyl-14-deoxyandrographiside (1) and 3-O-β-d-glucosyl-14-deoxy-11,12-didehydroandrographiside (2) by means of 1D and 2D NMR spectral and chemical methods.

Keywords:

• Andrographis paniculata
• ent-labdane diterpenoids
• 3-O-β-d-glucosyl-14-deoxy andrographiside
• 3-O-β-d-glucosyl-14-deoxy-11,12-didehydroandrographiside

Acknowledgements

This work was supported by the Fund of the Educational Department of Liaoning Province, China (20060882).