Structural Optimization of Caffeoyl Salicylate Scaffold as NO Production Inhibitors
作者:Pan Yu、Chao-Jie Xia、Dong-Dong Li、Zhenzhong Wang、Wei Xiao、Lin-Guo Zhao
DOI:10.1248/cpb.c19-00366
日期:2019.9.1
Chlorogenic acid (CGA) has been considered as one of important active components in a number of medicinal herbs. Recently our group demonstrated that caffeoyl salicylate scaffold derived from CGA can be employed for the development of novel anti-inflammatory agents. The most active compound D104 can be a very promising starting point for the further structural optimization. A series of novel caffeoyl salicylate analogs were designed, synthesized, and evaluated by preliminary biological evaluation. The obtained results showed that the two compounds B12 and B13 can not only inhibit production of nitric oxide (NO) in RAW264.7 cells induced by lipopolysaccharides (LPS) effectively, but also have high safety in in vitro cytotoxic test, which could be comparable with D104. Molecular docking study on the peroxisome proliferator-activated receptor γ (PPARγ) protein revealed that compounds B12 and B13 can follow the same binding mode with D104, and the carboxyl group of caffeoyl salicylate scaffold might play a key role in the interaction with protein target, which implied the carboxyl group should be retained in the further optimization.
氯原酸(CGA)被认为是多种药用植物中重要的活性成分之一。最近,我们的研究小组证明了衍生自CGA的咖啡酰水杨酸骨架可以用于开发新型抗炎药物。最活跃的化合物D104可以成为进一步结构优化的一个非常有前景的起点。我们设计、合成并通过初步生物评估评估了一系列新型咖啡酰水杨酸类似物。获得的结果显示,两个化合物B12和B13不仅能够有效抑制脂多糖(LPS)诱导的RAW264.7细胞中一氧化氮(NO)的生成,而且在体外细胞毒性测试中安全性较高,与D104可比。对过氧化物酶体增殖物激活受体γ(PPARγ)蛋白的分子对接研究表明,化合物B12和B13与D104具有相同的结合模式,而咖啡酰水杨酸骨架的羧基可能在与蛋白质靶点的相互作用中发挥关键作用,这意味着在进一步优化时应保留羧基。