作者:Xing-Nuo Li、Sheng-Qiang Tong、Dong-Ping Cheng、Qing-Yong Li、Ji-Zhong Yan
DOI:10.3390/molecules19022042
日期:——
A new coumarin, edgeworic acid (1), was isolated from the flower buds of Edgeworthia chrysantha, together with the five known coumarins umbelliferone (2), 5,7-dimethoxycoumarin (3), daphnoretin (4), edgeworoside C (5), and edgeworoside A (6). Their structures were established on the basis of spectral data, particularly by the use of 1D NMR and several 2D shift-correlated NMR pulse sequences (1H-1H
从 Edgeworthia chrysantha 的花蕾中分离出一种新的香豆素,edgeworic acid (1),以及五种已知的香豆素伞形酮 (2)、5,7-二甲氧基香豆素 (3)、daphnoretin (4)、edgeworoside C (5) ,和edgeworoside A (6)。它们的结构是基于光谱数据建立的,特别是通过使用 1D NMR 和几个 2D 位移相关 NMR 脉冲序列(1H-1H COSY、HSQC 和 HMBC),并结合乙酰化反应。