We choose flavonol compounds with hydroxyl substituents on B ring and isoflavone compounds with hydroxyl substituents on A ring to study their 13C-NMR properties .

• 我们选取黄酮醇类化合物B环羟基取代和异黄酮类化合物A环羟基取代这两个系列黄酮类化合物,对其核磁共振碳谱进行理论计算。