Ginkgolides are the major active component of Ginkgo biloba for inhibition of platelet activating factor receptor. An azide-alkyne Huisgen cycloaddition reaction was used to introduce a triazole nucleus into the target ginkgolide molecules. A series of ginkgolide-1,2,3-triazole conjugates with varied functional groups including benzyl, phenyl and heterocycle moieties was thus synthesized. Many of the designed derivatives showed potent antiplatelet aggregation activities with IC50 values of 5~21 nM.
银杏内酯是银杏叶中抑制血小板活化因子受体的主要活性成分。使用叠氮-炔Huisgen环加成反应将三唑核引入目标银杏内酯分子中。因此合成了一系列具有苯甲基、苯基和杂环基团等不同功能基团的银杏内酯-1,2,3-三唑共轭物。许多设计的衍生物显示出强效的抗血小板聚集活性,IC50值为5~21 nM。