1149-40-2Relevant academic research and scientific papers
Beyond Basicity: Discovery of Nonbasic DENV-2 Protease Inhibitors with Potent Activity in Cell Culture
Kühl, Nikos,Leuthold, Mila M.,Behnam, Mira A. M.,Klein, Christian D.
, p. 4567 - 4587 (2021/05/06)
The viral serine protease NS2B-NS3 is one of the promising targets for drug discovery against dengue virus and other flaviviruses. The molecular recognition preferences of the protease favor basic, positively charged moieties as substrates and inhibitors, which leads to pharmacokinetic liabilities and off-target interactions with host proteases such as thrombin. We here present the results of efforts that were aimed specifically at the discovery and development of noncharged, small-molecular inhibitors of the flaviviral proteases. A key factor in the discovery of these compounds was a cellular reporter gene assay for the dengue protease, the DENV2proHeLa system. Extensive structure-activity relationship explorations resulted in novel benzamide derivatives with submicromolar activities in viral replication assays (EC50 0.24 μM), selectivity against off-target proteases, and negligible cytotoxicity. This structural class has increased drug-likeness compared to most of the previously published active-site-directed flaviviral protease inhibitors and includes promising candidates for further preclinical development.
Identification of highly potent N-acylethanolamine acid amidase (NAAA) inhibitors: Optimization of the terminal phenyl moiety of oxazolidone derivatives
Li, Yuhang,Chen, Qi,Yang, Longhe,Li, Yanting,Zhang, Yang,Qiu, Yan,Ren, Jie,Lu, Canzhong
supporting information, p. 214 - 221 (2017/08/16)
N-acylethanolamine acid amidase (NAAA) is a cysteine hydrolase that participates in the deactivation of fatty acid ethanolamides, such as palmitoylethanolamide (PEA). NAAA inhibition may provide a potential therapeutic strategy for the treatment of diseases in which higher PEA level is desired. In the present study, we reported the structure-activity relationship (SAR) studies for oxazolidone derivatives as NAAA inhibitors. A series of substituents or alkyl replacements for the terminal phenyl ring of oxazolidone derivatives were examined. The results showed that the inhibition potency of these oxazolidone derivatives towards NAAA depends on the sizes, flexibility, and lipophilicity of the terminal groups. SAR results suggested that small lipophilic 3-phenyl substituents or hydroxy-containing 4-phenyl substituents were preferable for optimal potency. Furthermore, the distal aliphatic replacement is also preferred for high inhibitory potency. Rapid dilution and kinetic analysis suggested that oxazolidone derivatives with different terminal phenyl moieties inhibited NAAA via different mechanisms. This study identified several highly potent NAAA inhibitors, including 1a (F215, IC50 = 0.009 μM), 1o (IC50 = 0.061 μM) and 2e (IC50 = 0.092 μM), and also determined structural requirements of oxazolidone derivatives for potent inhibition against NAAA.
Studies on Selective Nucleophilic Substitution Reactions of (+)PF6(-) Complexes: Applications to the Synthesis of Polymer Monomers
Pearson, Anthony J.,Gelormini, Ann M.
, p. 4561 - 4570 (2007/10/02)
Selective displacement of chloride from cyclopentadienyl(1,4-dichlorobenzene)iron(1+) by a series of aryl oxide and amine nucleophiles is described.The methodology, coupled with decomplexation of the product organometallics, allows access to a series of para-disubstituted benzene derivatives that are of potential value in the construction of unusual polymers.Four such compounds, derived from sequential addition of 4-hydroxybenzoic ester and hydroquinone or resorcinol monophenoxide to the 1,4- and 1,3-dichlorobenzene-FeCp complexes, were subjected to polyesterification reactions.Previously unreported isoregic poly(ether-esters) were prepared and characterized.
