1818
J. Nat. Prod. 2004, 67, 1818-1822
A New Glucosyl Feruloyl Quinic Acid as a Potential Marker for Roots and Rhizomes of Goldenseal, Hydrastis canadensis Catherine E. McNamara,† Nigel B. Perry,*,† John M. Follett,‡ Graeme A. Parmenter,§ and James A. Douglas‡ New Zealand Institute for Crop & Food Research Limited, Plant Extracts Research Unit, Department of Chemistry, University of Otago, Box 56, Dunedin, New Zealand, Ruakura Agricultural Centre, Hamilton, New Zealand, and Invermay Agricultural Centre, Mosgiel, New Zealand Received April 13, 2004
A new compound, 5-O-(4′-[β-D-glucopyranosyl]-trans-feruloyl)quinic acid (GPFQ, 10), is reported from the medicinal plant goldenseal (Hydrastis canadensis). A new HPLC method is described and used to show that GPFQ is a potential marker for goldenseal roots (1.0% w/w) and rhizomes (2.3%). GPFQ was found at much lower levels in stems (
