New xanthine oxidase inhibitors from the fruiting bodies of <i>Tyromyces fissilis</i>
作者:Shunsuke Mitomo、Mitsuru Hirota、Tomoyuki Fujita
DOI:10.1080/09168451.2019.1576501
日期:2019.5.4
Excessive uric acid production, which causes gout and hyperuricemia, can be blocked by inhibiting xanthine oxidase (XO). However, some agents to block on XO often cause side effects, thereby necessitating the identification of new inhibitors. During the screening of XO inhibitors from various mushroom extracts, we found that a methanolic extract of the fruiting bodies of Tyromyces fissilis, an inedible
可通过抑制黄嘌呤氧化酶(XO)阻止引起痛风和高尿酸血症的过多尿酸产生。但是,某些阻断XO的药物通常会引起副作用,因此需要鉴定新的抑制剂。在从各种蘑菇提取物中筛选XO抑制剂的过程中,我们发现,Tyromyces fissilis子实体(一种不可食用且无毒的真菌)的甲醇提取物表现出抑制活性。通过分配该萃取物而获得的正己烷和乙酸乙酯层均表现出XO抑制活性。随后,使用活性导向的分离方法,分离出八种活性化合物(1-8)。通过光谱分析和化学衍生化阐明了五个新化合物2-4、6和7的结构。所有化合物均具有在C-6位带有脂族基的水杨酸部分。值得注意的是,2-羟基-6-十五烷基苯甲酸(1)显示出最高水平的XO非竞争性抑制(25 µM时为58.9±2.2%)。