Two new dammarane-type triterpenoids from the stems and leaves of Panax notoginseng

Abstract

Two new dammarane-type triterpenoids, notoginsenoside SY1 (1) and notoginsenoside SY2 (2), were isolated from the stems and leaves of Panax notoginseng. Their structures were elucidated to be 3β, 12β-dihydroxy-22, 23, 24, 25, 26, 27-hexanordammarane-20-one 3-O-β-D-xylopyranosyl-(1→2)-O-β-D-glucopyranosyl-(1→2)-O-β-D-glucopyranoside (1), 3β, 12β-dihydroxy-20S, 24 R-epoxydammar-25-ene 3-O-β-D-xylopyranosyl-(1→2)-O-β-D-glucopyranosyl-(1→2)-O-β-D-glucopyranoside (2) by IR, HRESIMS and NMR experiments.

Graphical Abstract

Keywords:

• Panax notoginseng
• dammarane-type triterpenes
• notoginsenoside SY1
• notoginsenoside SY2

Acknowledgments

The authors are grateful to the staff of analytical group at the State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences for the spectral data.

Disclosure statement

No potential conflict of interest was reported by the authors.