C-Glucosylflavonoid biosynthesis from 2-hydroxynaringenin by Desmodium uncinatum (Jacq.) (Fabaceae)
作者:Mary L. Hamilton、John C. Caulfield、John A. Pickett、Antony M. Hooper
DOI:10.1016/j.tetlet.2009.07.118
日期:2009.10
[2',3',5',6'-H-2(4)]-2-Hydroxynaringenin is synthesised and incubated with commercially available UDP-glucose and the crude protein extract from Desmoduim uncinatum leaves. The organic extract produces isotopically labelled [2',3',5',6'-H-2(4)]-vitexin and [2',3',5',6'-H-2(4)]-isovitexin. Repeating the experiment with denatured protein or replacing the 2-hydroxynaringenin with [2',3',5',6'-H-2(4)]-apigenin or [2',3',5',6'-H-2(4)]- naringenin results in no observable incorporation. 2-Hydroxynaringenin is therefore the substrate for C-glucosylflavonoid biosynthesis in D. uncinatum. (C) 2009 Elsevier Ltd. All rights reserved.