Analysis of the tautomeric structures of auronols by<sup>13</sup>C n.m.r. and comparison with the isomeric flavonols
作者:Andrew Pelter、Robert S. Ward、Rudolf Hänsel、Faies Khaliefi
DOI:10.1039/p19810003182
日期:——
The 13C n.m.r. spectra of a series of auronols and flavonols have been analysed in order to determine the tautomericstructures of the auronols and to distinguish between the two series. By using a specifically 13C labelled auronol sample, together with coupling constants, changes on additin of D2O, and solvent-shift data, it has been shownthat auronol and 6-substituted auronols exist in solution as
已分析了一系列金红酚和黄酮醇的13 C nmr光谱,以确定金红酚的互变异构结构并在这两个系列之间进行区分。通过使用经过特殊标记的13 C的金红酚样品,偶合常数,D 2 O的添加素变化和溶剂转移数据,已显示出金红酚和6-取代的金红酚以2-苯甲酰基-3-的形式存在于溶液中。羟基苯并呋喃,而4,6二羟基月桂醇以E-和Z -7'-羟基金酮的混合物形式存在。