Guangxi Key Laboratory of Functional Phytochemicals Research and Utilization, Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guilin 541006, China.
Department of Natural Product Chemistry, Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan.
Molecules. 2017 Jan 19;22(1):162. doi: 10.3390/molecules22010162.
In the course of a phytochemical and chemotaxonomical investigation of species (Fagaceae), three new phenolic compounds, (3,1')-[1'-(6″--galloyl-β-d-gluco-pyranosyl)oxyethyl]-3-hydroxy-dihydrofuran-2(3)-one (), (2,3)-2-[2'-(galloyl)oxyethyl]-dihydroxybutanoic acid (), and (3,4)-3-hydroxymethyl-3,4-dihydro-5,6,7-trihydroxy-4-(4'-hydroxy-3'-methoxyphenyl)-1-[2]-benzopyran-1-one () were isolated from the fresh leaves of . In addition, a known phenolic glycoside, gentisic acid 5--α-l-rhamnopyranosyl-(1→2)-β-d-glucopyranoside () was also isolated and identified. Their structures were elucidated by means of spectroscopic methods including one- and two-dimensional NMR techniques.
在对 种（壳斗科）的植物化学和化学分类学研究过程中，从 的新鲜叶子中分离得到了三种新的酚类化合物：(3,1')-[1'-(6″-- 没食子酰基-β-d-吡喃葡萄糖基)氧基乙基]-3-羟基二氢呋喃-2(3)-酮 ()、(2,3)-2-[2'-( 没食子酰基)氧基乙基]-二羟基丁酸 () 和 (3,4)-3-羟甲基-3,4-二氢-5,6,7-三羟基-4-(4'-羟基-3'-甲氧基苯基)-1-[2]-苯并吡喃-1-酮 ()。此外，还分离并鉴定了一种已知的酚糖苷，即没食子酸 5--α-l-鼠李吡喃糖基-(1→2)-β-d-吡喃葡萄糖苷 ()。通过包括一维和二维 NMR 技术在内的光谱方法阐明了它们的结构。
