Chemical constituents of Bauhinia aurea

Abstract

A new dihydroflavonol glycoside dimer 6,6-bisastilbin (1) and a new nitrile-containing metabolite (Z)-5α,6β-dihydroxy-4β-methoxy-2-cyclohexene-Δ^1,α-acetonitrile (2), together with three known analogs, bauhinin, bauhinilide, and dehydrodicatechin A, have been isolated from an ethanol extract of Bauhinia aurea. Their structures were determined by spectroscopic and chemical methods.

Keywords:

• Leguminosae
• Bauhinia aurea
• 6,6-bisastilbin
• (Z)-5α,6β-dihydroxy-4β-methoxy-2-cyclohexene-Δ^1,α-acetonitrile

Acknowledgements

Financial support from the National Natural Sciences Foundation of China (NNSFC; Grant Nos 30825044, 81102341, 20932007, and 21132009), the Program for Changjiang Scholars and Innovative Research Team in University (PCSIRT, Grant No. IRT1007), and the National Science and Technology Project of China (No. 2011ZX09307-002-01) is acknowledged.

Notes

^† Dedicated to Professor De-Quan Yu of Institute of Materia Medica on his 80th birthday and his great contribution to Natural Products Research.