an attempt to molecularly design liverXreceptor (LXR) β-selective agonists, we discovered that the combination of the 2-oxochromene moiety (head) and the imidazoline-2,4-dione moiety (tail) plays an important role in the expression potency and selectivity toward LXRβ. We synthesized a series of 2-oxochromene derivatives and identified 43 as a LXRβ-selective agonist that increased the HDL-C level without
在分子设计肝X受体(LXR)β-选择性激动剂的尝试中,我们发现2-氧代色烯部分(头部)和咪唑啉-2,4-二酮部分(尾巴)的组合在表达能力和对LXRβ的选择性。我们合成了一系列2-oxochromene衍生物,并确定了43种LXRβ选择性激动剂,可在不显着升高TG水平的情况下增加HDL-C水平,并导致高脂饮食中主动脉弓内脂质蓄积面积减少。和胆固醇喂养的Bio F 1 B仓鼠。在这份手稿中,我们报告了这些2-氧代苯并二氢吡喃衍生物的设计,合成和药理作用。
Facile one-pot synthesis of 5-substituted hydantoins
作者:Ross G. Murray、David M. Whitehead、Franck Le Strat、Stuart J. Conway
DOI:10.1039/b719675j
日期:——
5-Substituted and 5,5-disubstituted hydantoins are synthesised from the corresponding aldehydes or ketones, using a one-pot, gallium(III) triflate-catalysed procedure that is compatible with a range of substrates and solvents.
Identification and Profiling of Hydantoins—A Novel Class of Potent Antimycobacterial DprE1 Inhibitors
作者:Maciej K. Rogacki、Eleni Pitta、Olga Balabon、Sophie Huss、Eva Maria Lopez-Roman、Argyrides Argyrou、Delia Blanco-Ruano、Monica Cacho、Christophe M. L. Vande Velde、Koen Augustyns、Lluis Ballell、David Barros、Robert H. Bates、Fraser Cunningham、Pieter Van der Veken
DOI:10.1021/acs.jmedchem.8b01356
日期:2018.12.27
Tuberculosis is the leading cause of death worldwide from infectious diseases. With the development of drug-resistant strains of Mycobacterium tuberculosis, there is an acute need for new medicines with novel modes of action. Herein, we report the discovery and profiling of a novel hydantoin-based family of antimycobacterial inhibitors of the decaprenylphospho-beta-D-ribofuranose 2-oxidase (DprE1). In this study, we have prepared a library of more than a 100 compounds and evaluated them for their biological and physicochemical properties. The series is characterized by high enzymatic and whole-cell activity, low cytotoxicity, and a good overall physicochemical profile. In addition, we show that the series acts via reversible inhibition of the DprE1 enzyme. Overall, the novel compound family forms an attractive base for progression to further stages of optimization and may provide a promising drug candidate in the future.
Continuous Synthesis of Hydantoins: Intensifying the Bucherer–Bergs Reaction
A continuous Bucherer-Bergs hydantoin synthesis utilizing intensified conditions is reported. The methodology is characterized by a two-feed flow approach to independently feed the organic substrate and the aqueous reagent solution. The increased interfacial area of the biphasic reaction mixture and the lack of headspace enabled almost quantitative conversions within ca. 30 minutes at 120 degrees C and 20 bar even for unpolar starting materials. In addition, a selective N(3)-monoalkylation of the resulting heterocycles under batch microwave conditions is reported yielding potential acetylcholinesterase inhibitors.