Methoxyflavones from<i>Stachys glutinosa</i>with Binding Affinity to Opioid Receptors: In Silico, in Vitro, and in Vivo Studies
作者:Stefania Ruiu、Nicola Anzani、Alessandro Orrù、Costantino Floris、Pierluigi Caboni、Stefano Alcaro、Elias Maccioni、Simona Distinto、Filippo Cottiglia
DOI:10.1021/np500671v
日期:2015.1.23
Fractionation of the bioactive dichloromethane extract from the aerial parts of Stachys glutinosa led to the isolation of four flavones, xanthomicrol (1), sideritoflavone (2), 8-methoxycirsilineol (3), and eupatilin (4), along with two neo-clerodane diterpenes, roseostachenone (8) and a new compound, 3α,4α-epoxyroseostachenol (7). In order to study structure–activity relationships, two methoxyflavones
分离来自Stachys glutinosa地上部分的生物活性二氯甲烷提取物导致分离出四个黄酮,黄原胶(1),铁黄酮(2),8-甲氧西西里醇(3)和依帕替林(4),以及两个新的新环戊烷二萜,迷迭香酮(8)和新化合物3α,4α-环氧迷迭香酚(7)。为了研究结构与活性之间的关系,通过黄嘌呤微滴的甲氧基化反应合成了两个甲氧基黄酮[5-demethyltangeretin(5)和tangeretin(6)]。在分离的化合物(1 - 4,评价了图7和图8)以及黄嘌呤微半合成衍生物(5和6)对μ和δ阿片样物质受体的结合亲和力。Xanthomicrol是μ和δ受体最有效的结合剂,K i值分别为0.83和3.6μM。在小鼠甩尾试验中,以80 mg / kg的剂量腹膜内施用Xanthomicrol可以显着降低吗啡诱导的镇痛作用。我们的结果表明,xanthomicrol是一种μ阿片受体拮抗剂。进行了对接实验,以