Atom-efficient synthesis of 2,6-diazacyclophane compounds through alcoholysis/reduction of 3-nitroarylmethylene-2,5-piperazinediones
作者:Juan Francisco González、Elena de la Cuesta、Carmen Avendaño
DOI:10.1016/j.tet.2008.01.047
日期:2008.3
dehydrodipeptides are convenient starting materials for atom-efficient synthesis of different compounds. A one-pot ring-opening/alcoholysis/hydrolysis process with 3-nitroarylmethylene-2,5-piperazinediones yielded N-3-nitroarylpyruvoylamino esters, which gave the corresponding amines by reduction of the nitro group. In the case of 2-nitroaryl compounds, an intramolecular reductive amination afforded
Betti reaction enables efficient synthesis of 8-hydroxyquinoline inhibitors of 2-oxoglutarate oxygenases
作者:C. C. Thinnes、A. Tumber、C. Yapp、G. Scozzafava、T. Yeh、M. C. Chan、T. A. Tran、K. Hsu、H. Tarhonskaya、L. J. Walport、S. E. Wilkins、E. D. Martinez、S. Müller、C. W. Pugh、P. J. Ratcliffe、P. E. Brennan、A. Kawamura、C. J. Schofield
DOI:10.1039/c5cc06095h
日期:——
A Betti reaction was used for efficient generation of 2OG oxygenase inhibitors, including for KDM4 demethylases.
使用Betti反应高效生成2OG氧化酶抑制剂,包括KDM4去甲基酶。
Tetrahydroisoquinoline-Derived Urea and 2,5-Diketopiperazine Derivatives as Selective Antagonists of the Transient Receptor Potential Melastatin 8 (TRPM8) Channel Receptor and Antiprostate Cancer Agents
作者:Luciano De Petrocellis、Francisco J. Arroyo、Pierangelo Orlando、Aniello Schiano Moriello、Rosa Maria Vitale、Pietro Amodeo、Aránzazu Sánchez、Cesáreo Roncero、Giulia Bianchini、M. Antonia Martín、Pilar López-Alvarado、J. Carlos Menéndez
DOI:10.1021/acs.jmedchem.5b01448
日期:2016.6.23
compounds containing one tetrahydroisoquinoline ring and than an open phenetylamine ureide. (c) Trans compounds are more active than their cis isomers. (d) Aryl substituents are better than alkyls at the isoquinoline C-1 position. (e) Electron-withdrawing substituents lead to higher activities. The most potent compound is the 4-F derivative, with IC50 in the 10–8 M range and selectivities around 1000:1 for
<i>E</i>-Selective Synthesis and Coordination Chemistry of Pyridine-Phosphaalkenes: Five Ligands Produce Four Distinct Types of Ru(II) Complexes
作者:Mika L. Nakashige、Jarin I. P. Loristo、Lesley S. Wong、Joshua R. Gurr、Timothy J. O’Donnell、Wesley Y. Yoshida、Arnold L. Rheingold、Russell P. Hughes、Matthew F. Cain
DOI:10.1021/acs.organomet.9b00425
日期:2019.9.9
spatial arrangement of donors to Ru(II) with an agostic Ru–H–C interaction serving as the sixth donor to the transition metal center. Ligands 2b,d,e and Ru(II) complexes 3b, 4b,e and 5a were all characterized by X-ray crystallography. Six-coordinate 6c featured a structure similar to 4b,d,e, but with the CF3 substituent acting as a weakly bound sixth ligand to the Ru(II) center, as observed by 31P1H}
吡啶-磷烯烃(PN)配体2a – e使用磷-维蒂希方法以E选择性方式制备。用RuCl 2(PPh 3)3处理这五个配体(仅在其6取代基中发生变化),产生了四种不同类型的配位配合物:吡啶-磷烯烃衍生的3b,d,环化的4e以及六配位的5a和6c。长时间在THF中加热3b,d导致Mes *基团的C–H活化和环化生成4b,d具有与金属中心结合的二齿吡啶-膦烷配体。配合物5a,也具有新形成的磷环,包含Ru(II)供体的不同空间排列,Ru-H-C相互作用很强,是过渡金属中心的第六个供体。配体2b,d,e和Ru(II)配合物3b,4b,e和5a均通过X射线晶体学表征。六坐标6c具有类似于4b,d,e的结构,但具有CF 3如31 P 1 H}和19 F NMR光谱所观察到的,该取代基充当与Ru(II)中心的弱结合第六配体。计算得出的6c结构确定最接近的Ru---F接触为2.978Å。
Identification of novel urea derivatives as PTP1B inhibitors: synthesis, biological evaluation and structure–activity relationships
作者:Swati Gupta、Kanika Varshney、Rohit Srivastava、Neha Rahuja、Arun K. Rawat、Arvind K. Srivastava、Anil K. Saxena
DOI:10.1039/c3md00138e
日期:——
The protein tyrosine phosphatase 1B (PTP1B) is an attractive target for the treatment of type 2 diabetes. A series of substituted 1,3-benzyl urea has been synthesized and evaluated for PTP1B inhibitory, antidiabetic and antidyslipidemic activities. The most active compound of the series 5b showed 79.4% PTP1B inhibition and 20.7% blood glucose lowering in the STZ model. It also lowered the serum cholesterol level by 16.3% and significantly increased the serum HDL-cholesterol by 46.8%. The high activity of compound 5b has been explained by docking studies.