We found out 2′,3′-dihydroxypuberulin from South American medicinal plant, V. thapsus L., as a candidate of an anti-allergic lead which inhibits the expression of high-affinity receptor of IgE (FcεRI) on the surface of mast cells. Furthermore, the analysis of structure-activity relationship by using synthesized 2′,3′-dihydroxypuberulin analogs revealed that both hydroxy groups in the side chain and both of methyl moieties on phenolic hydroxy groups were crucial for potent activity, but absolute configuration of C-3′ position wasn’t. The active principle, 2′,3′-dihydroxypuberulin, was disclosed to down-regulate the mRNA level of β-chain of FcεRI, different from previous reported active natural product reducing γ-chain level.

我们从南美药用​​植物V. thapsus L.中发现了2'，3'-二羟基青春素，作为抗过敏铅的候选物，该铅抑制了IgE（FcεRI）高亲和力受体在桅杆表面的表达细胞。此外，通过使用合成的2'，3'-二羟基青春粉蛋白类似物进行的结构-活性关系分析表明，侧链上的两个羟基以及酚羟基上的甲基均对有效活性至关重要，但C-的绝对构型3'的位置不是。公开了活性成分2'，3'-二羟基青春粉蛋白，其下调FcεRI的β链的mRNA水平，这与先前报道的降低γ链水平的活性天然产物不同。