射干中一个新异黄酮的核磁共振研究(英文)

Structure Elucidation of Isoflavones Extracted from Belamcanda Chinensis

从射干中分离得到一个新异黄酮及结构相似的两个异黄酮类化合物,即5,7,3′三羟基6,2′,5′三甲氧基异黄酮,5,7,3′三羟基6,4′,5′三甲氧基异黄酮(野鸢尾黄素)和它的苷(野鸢尾苷).它们的结构都通过1HNMR,13CNMR确定.新异黄酮的结构通过MS,HMBC,HSQC和NOESY进一步确定.

A new isoflavone and two compounds with similar structures, namely 5, 7, 3′-trihydroxy-6, 2′, 5′-trimethoxyisoflavone, 5, 7, 3′-trihydroxy-6, 4′, 5′-trimethoxyisoflavone （irigenin） and its glucoside （iridin）, were isolated from Belarncanda chinensis. The structures of these compounds were determined by ^1H and ^13C NMR spectroscopy. The structure of the new isoflavone was further verified by combined use of mass spectroscopy and 2D NMR techniques including HMBC, HSQC and NOESY.