Structure elucidation and NMR spectral assignments of four neolignan glycosides with enantiometric aglycones from<i>Osmanthus ilicifolius</i>
作者:Koichi Machida、Shigeaki Sakamoto、Masao Kikuchi
DOI:10.1002/mrc.2292
日期:2008.10
ide (4), were isolated from the leaves of Osmanthus ilicifolius. Their structures were established on the basis of NMR, circular dichroism (CD), MS and chemical data. The NMR assignments for the compounds were carried out using 1H, 13C, COSY, HMQC, HMBC and NOESY NMR experiments. Copyright © 2008 John Wiley & Sons, Ltd.
四种具有对映体苷元的新型 8-O-4' 型新木脂素糖苷,(7S,8R)-erythro-guaiacylglycerol-β-O-4'-sinapyl ether 9-O-β-D-glucopyranoside (1), (7R, 8S)-赤型-愈创木脂酰甘油-β-O-4'-芥子醚 9-O-β-D-吡喃葡萄糖苷 (2), (7S,8R)-赤型-紫丁香甘油-β-O-4'-芥子醚 9- O-β-D-吡喃葡萄糖苷 (3) 和 (7R,8S)-erythro-syringylglycerol-β-O-4'-sinapyl ether 9-O-β-D-glucopyranoside (4), 从桂花的叶子中分离出来冬青。它们的结构是在核磁共振、圆二色性 (CD)、质谱和化学数据的基础上建立的。化合物的 NMR 归属使用 1H、13C、COSY、HMQC、HMBC 和 NOESY NMR 实验进行。版权所有