来自乌冈栎的新二氢查耳酮苷以及在酚类成分的核磁共振谱中观察到的C-H→C-D交换现象。

New dihydrochalcone glycosides from Lithocarpus litseifolius and the phenomenon of C-H-->C-D exchange observed in NMR spectra of phenolic components.

作者信息

Chen Zhen-Hua, Zhang Ru-Jun, Wu Jian, Zhao Wei-Min

机构信息

Shanghai Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China.

出版信息

J Asian Nat Prod Res. 2009 Jun;11(6):508-13. doi: 10.1080/10286020902920752.

DOI:10.1080/10286020902920752

PMID:20183283

Abstract

Two new dihydrochalcone glycosides named 6''-O-acetyltrilobatin (1) and 3''-O-acetylphloridzin (2) as well as four known compounds were isolated from the leaves of Lithocarpus litseifolius (Hance) Chun (family Fagaceae). Their structures were elucidated on the basis of spectroscopic analyses. The phenomena of C-H --> C-D exchange were observed in NMR spectra of the isolated phenolic components when measured in deuterated methanol.

摘要

从壳斗科植物石柯（Lithocarpus litseifolius (Hance) Chun）的叶子中分离出两种新的二氢查耳酮糖苷，分别命名为6''-O-乙酰基三叶苷（1）和3''-O-乙酰基根皮苷（2），以及四种已知化合物。通过光谱分析确定了它们的结构。当在氘代甲醇中测量时，在分离出的酚类成分的核磁共振谱中观察到了C-H→C-D交换现象。