on the GABA A receptor and thus represents a potential new lead structure for the discovery of new anxiolytics. Here we present the enantioselective total synthesis of valerenic acid, which departs from natural (R)-pulegone and proceeds through a bicyclic ketone as the central intermediate. Key transformations are the stereoselectivereduction of a 3,4-disubstituted cyclohexenone and a microwave-assisted
缬草酸是缬草根的主要成分。它表现出对 GABA A 受体的调节活性,因此代表了发现新抗焦虑药的潜在新先导结构。在这里,我们介绍了戊烯酸的对映选择性全合成,它与天然 (R)-胡薄荷酮不同,并通过双环酮作为中心中间体进行。关键转化是 3,4-二取代环己烯酮的立体选择性还原和微波辅助的 Wittig 反应。