射干中一个新异黄酮的核磁共振研究

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¹H NMR, ¹³C NMR 确定. 新异黄酮的结构通过MS, HMBC, HSQC 和 NOESY进一步确定.

Structure Elucidation of Isoflavones Extracted from Belamcanda Chinensis

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 Belamcanda 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.