A new isoflavone glycoside from flowers of Pueraria Montana var. lobata (Willd.) Sanjappa & Pradeep

Abstract

A new isoflavone glycoside, named 3’-hydroxytectorigenin-7-O-β-D-xylosyl-(1→6)-β-D-glucopyranoside (1) was isolated from the flowers of Pueraria montana var. lobata (Willd.) Sanjappa & Pradeep. The structure of compound 1 was characterised by HR-ESI-MS and NMR spectroscopic methods. In radical scavenging activity test using 2, 2-diphenyl-1-picrylhydrazyl (DPPH), compound 1 showed moderate activity with IC₅₀ value of 42 ± 4.2 μg/mL.

Keywords:

• Pueraria montana var. lobata
• isoflavone glycoside
• 3’-hydroxy -tectorigenin-7-O-β-D-xylosyl-(1→6)-β-D-glucopyranoside
• radical scavenging activity

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was financially supported by the Fundamental Research Funds for the Central Universities [grant number: JZ2019HGTB0061, JZ2016HGTA0680], the Major Projects of Science and Technology in Anhui Province [grant numbers: 18030701144, 18030701142, 17030701058, 17030701024 and 17030701028], and Natural Science Foundation of Anhui Province [grant number 1608085QH178].