Discovery of acylated isoquercitrin derivatives as potent anti-neuroinflammatory agents in vitro and in vivo
作者:Jie Liu、Ailing Hui、Jinghe Wang、Qingfeng Hu、Shengnan Li、Yuanli Chen、Zeyu Wu、Wencheng Zhang
DOI:10.1016/j.cbi.2023.110675
日期:2023.9
anti-neuroinflammatory effects including cinnamic acid, ibuprofen (IBU) and acetylsalicylic acid were introduced into the 6''-OH of IQ through the corresponding vinyl esters intermediates (8a-8c). Ultimately, the acylated IQ derivatives (Compound 9a-9c) were obtained with 35–42% yields using immobilized lipase Novozym 435 as catalyst. Subsequently, their anti-neuroinflammatory activities were evaluated in lipopolysaccharide
神经炎症被认为是神经退行性疾病的重要病理机制。据报道,天然异槲皮苷 (IQ) 具有潜在的抗神经炎症活性。IQ中糖苷的酰化增强了其疏水性,有望增强抗炎症的保护作用。本研究通过相应的乙烯基酯中间体将肉桂酸、布洛芬(IBU)和乙酰水杨酸等三种具有抗神经炎症作用的羧酸引入到IQ的6''-OH上(8a-8c )。最终,使用固定化脂肪酶 Novozym 435 作为催化剂,获得了酰化 IQ 衍生物(化合物9a-9c ),产率为 35-42%。随后,在脂多糖(LPS)诱导的 BV2 细胞中评估了它们的抗神经炎症活性。化合物9b在≤50μM范围内改善细胞活力,并以浓度依赖性方式显着降低NO、PGE 2 的产生以及TNF-α、IL-1β的释放和氧化应激水平。此外,它还可以下调 iNOS、COX-2、TNF-α 和 IL-1β 的表达水平,当使用15μM 化合物9b时,可降低约 40% 。此外,化合物9b还能