Identification and structure activity relationship of novel flavone derivatives that inhibit the production of nitric oxide and PGE 2 in LPS-induced RAW 264.7 cells
作者:Ji-Young An、Hwi-Ho Lee、Ji-Sun Shin、Hyung-Seok Yoo、Jong Seon Park、Seung Hwan Son、Sang Won Kim、Jihyun Yu、Jun Lee、Kyung-Tae Lee、Nam-Jung Kim
DOI:10.1016/j.bmcl.2017.03.057
日期:2017.6
In an effort to identify novel anti-inflammatory compounds, a series of flavone derivatives were synthesized and biologically evaluated for their inhibitory effects on the production of nitric oxide (NO) and prostaglandinE2 (PGE2), representative pro-inflammatory mediators, in LPS-induced RAW 264.7 cells. Their structure-activity relationship was also investigated. In particular, we found that compound
Rh(III)-catalyzed C–H activation of salicylaldehyde followed by an insertion reaction with sulfoxonium ylides and cyclization is applied to the synthesis of flavonoids. This one-pot strategy exhibits good functional group tolerance and gives flavones in moderate-to-good yields.
A versatile approach to flavones via a one-pot Pd(<scp>ii</scp>)-catalyzed dehydrogenation/oxidative boron-Heck coupling sequence of chromanones
作者:Jun Lee、Jihyun Yu、Seung Hwan Son、Jinyuk Heo、Taelim Kim、Ji-Young An、Kyung-Soo Inn、Nam-Jung Kim
DOI:10.1039/c5ob01911g
日期:——
A variety of flavones were expediently synthesized from readily accessible chromanones via a one-pot sequence involving Pd(ii)-catalyzed dehydrogenation and oxidative boron-Heck coupling with arylboronic acid pinacol esters.
Exploration of Baicalein-Core Derivatives as Potent Antifungal Agents: SAR and Mechanism Insights
作者:Heyang Zhou、Niao Yang、Wei Li、Xuemi Peng、Jiaxiao Dong、Yuanying Jiang、Lan Yan、Dazhi Zhang、Yongsheng Jin
DOI:10.3390/molecules28176340
日期:——
Baicalensis, exhibited potently antifungal activity against drug-resistant Candidaalbicans, and strong inhibition on biofilm formation. Therefore, a series of baicalein-core derivatives were designed and synthesized to find more potent compounds and investigate structure–activity relationship (SAR) and mode of action (MoA). Results demonstrate that A4 and B5 exert a more potent antifungal effect (MIC80
shown that 1,3-propanediol acts both as a participant and solvent to achieve regioselective cyclization and carbonyl site oxygen migration. Significantly, the total synthesis of drug molecules efloxate 6 and flavodilol 7 and bioactive molecules, such as 8 and MN-64, further demonstrates the efficacy and synthetic potential of this method. Moreover, most established flavonoid derivatives are found to have
开发了一种以β-苯氧基炔酮为原料,以湿1,3-丙二醇为反应介质,在不使用任何金属催化剂、碱、酸或添加剂的情况下,绿色、高效、高区域选择性合成黄酮类化合物及其衍生物的方法。该反应表现出高水平的功能耐受性和广泛的底物范围,操作简单,原子经济性高。此外,机制研究表明,1,3-丙二醇既作为参与者又作为溶剂,实现区域选择性环化和羰基位点氧迁移。值得注意的是,药物分子efloxate 6和flavodilol 7以及生物活性分子8和MN-64的全合成进一步证明了该方法的功效和合成潜力。此外,大多数已建立的黄酮类衍生物都具有很强的抗炎活性,其中2d表现出更好的效果,IC 50 值较低,为5.67 μg mL −1 。