A series of azolyl flavonoids were synthesized and characterized by NMR, IR, MS and HRMS spectra. All the newly prepared compounds were screened for their potential protein tyrosine phosphatase inhibitory activities. Bioactive assay manifested that most of the azolyl flavonoids exhibited good protein phosphatase 1B (PTP1B) inhibitory activities. Especially, triazolyl flavonoid 6a displayed the best inhibitory activity (IC₅₀ = 1.6 μM) with 9.9-fold selectivity for PTP1B over the closely related T-cell protein tyrosine phosphatase (TCPTP). Cell viability assays indicated 6a has lower cytotoxicity. Molecular modeling and dynamics studies revealed the reason of selectivity for PTP1B over TCPTP. Quantum chemical studies were carried out on these compounds to understand the structural features essential for activity.

合成了一系列偶氮基黄酮，并通过NMR，IR，MS和HRMS光谱进行了表征。筛选所有新制备的化合物潜在的蛋白酪氨酸磷酸酶抑制活性。生物活性测定表明，大多数偶氮基黄酮类化合物均具有良好的蛋白磷酸酶1B（PTP1B）抑制活性。特别是，三唑基黄酮6a表现出最好的抑制活性（IC ₅₀  = 1.6μM），对PTP1B的选择性是与密切相关的T细胞蛋白酪氨酸磷酸酶（TCPTP）的9.9倍。细胞活力测定表明6a具有较低的细胞毒性。分子建模和动力学研究揭示了PTP1B相对于TCPTP选择性的原因。对这些化合物进行了量子化学研究，以了解活性必不可少的结构特征。