柳叶红千层叶的多酚成分。
Polyphenolic constituents of Callistemon lanceolatus leaves.
作者信息
Mahmoud I I, Moharram F A, Marzouk M S A, Linscheid M W, Saleh M I
机构信息
Pharmacognosy Department, Faculty of Pharmacy, Helwan University, Helwan, Cairo, Egypt.
出版信息
Pharmazie. 2002 Jul;57(7):494-6.
Two new flavonol glycosides, kaempferol 3-O-beta-D-galacturonopyranoside and quercetin 3-O-(2"-O-galloyl)-beta-D-glucoronopyranoside, were isolated, from leaves of Callistemon lanceolatus DC, as well as eighteen known polyphenols (phenolic acids, flavonoids and three tannins). All structures were established mainly on the basis of chemical and spectroscopic analysis (UV, 1D NMR and negative ESI-MS) and finally confirmed by 2D NMR experiments (HMQC and HMBC), in the case of flavonoid glycosides and tannins.
从柳叶红千层（Callistemon lanceolatus DC）的叶子中分离出两种新的黄酮醇苷，即山奈酚3 - O - β - D - 吡喃半乳糖醛酸苷和槲皮素3 - O -（2″ - O - 没食子酰基）- β - D - 吡喃葡萄糖醛酸苷，以及十八种已知的多酚类化合物（酚酸、黄酮类化合物和三种单宁）。对于黄酮苷和单宁，所有结构主要基于化学和光谱分析（紫外光谱、一维核磁共振和负离子电喷雾质谱）确定，最后通过二维核磁共振实验（异核多量子相干谱和异核多键相关谱）进行确认。
Zotero 插件