Two new compounds from the roots of Pueraria peduncularis and their molluscicidal effects on Pomacea canaliculata

Abstract

Two oleanane-type triterpenoid saponins named pedunsaponin D (1) and pedunsaponin E (2) were isolated from the roots of Pueraria peduncularis. The structures of the new compounds were elucidated based on chemical and physicochemical evidence as follows: pedunsaponin D, 3-O-β-glucopyranosyl-(1-3)-β-glucuronopyranosyl-3β,15α,23α-trihydroxy-11,13(18)-oleanadien-16-one (1); pedunsaponin E, 3-O-β-glucopyranosyl-(1-2)-β-glucopy ranosyl(1-2)[β-glucopyranosyl(1-3)-β-glucuronopyranosyl]-3β-hydroxy-16-oxoolean-12-en-30-oic acid (2). The two compounds showed moderate molluscicidal activity.

Keywords:

• Pueraria peduncularis
• Pomacea canaliculata
• molluscicidal activity
• new compound
• pedunsaponin D
• pedunsaponin E

Acknowledgments

The authors are grateful to Shanghai Standard Technology Company (Shanghai, China) for the assistance with the equipment.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was financially supported by the Foundation of Supporting the Poor Through Sciences and Technologies in Sichuan, China [grant number 2017NFP0062].