Steroidal glycosides from tubers of Ophiopogon japonicus

Abstract

A new steroidal saponin, named ophiopogonin E (1), has been isolated from the tubers of Ophiopogon japonicus, along with five known steroidal saponins (2–6). The structure of the new steroidal glycoside was characterized by spectroscopic analysis and acid-catalyzed hydrolysis as pennogenin 3-O-β-d-xylopyranosyl (1 → 4)-β-d-glucopyranoside (1).

Keywords:

• Ophiopogon japonicus
• Liliaceae
• Steroidal saponin
• Pennogenin

Acknowledgements

This work was supported by a grant from the State Ministry of Education (no. 02118), and a grant from Jiangsu Province Government, China, awarded to Bo-yang YU.