De novo endo-functionalized organic cages as cooperative multi-hydrogen-bond-donating catalysts
作者:Hong-Yu Chen、Meng Gou、Jiao-Bing Wang
DOI:10.1039/c7cc00938k
日期:——
Two endo-functionalized organic cages as oxyanion hole mimics were achieved via dynamic covalent chemistry, which exhibit good size selectivity, catalytic activity and broad substrate scopes for Friedel–Crafts reactions.
Discovery and Rational Design of Natural-Product-Derived 2-Phenyl-3,4-dihydro-2<i>H</i>-benzo[<i>f</i>]chromen-3-amine Analogs as Novel and Potent Dipeptidyl Peptidase 4 (DPP-4) Inhibitors for the Treatment of Type 2 Diabetes
Starting from the lead isodaphnetin, a natural product inhibitor of DPP-4 discovered through a target fishing docking based approach, a series of novel 2-phenyl-3,4-dihydro-2H-benzo[f]chromen-3-amine derivatives as potent DPP-4 inhibitors are rationally designed utilizing highly efficient 3D molecular similarity based scaffold hopping as well as electrostatic complementary methods. Those ingenious
从通过靶标对接的方法发现的DPP-4天然产物抑制剂异佛定素开始,一系列新的2-苯基-3,4-二氢-2 H-苯并[ f ]铬-3-胺衍生物因为有效的DPP-4抑制剂是通过基于高效3D分子相似性的支架跳跃以及静电互补方法进行合理设计的。这些巧妙的药物设计策略为我们带来了大约7400倍的效能提升。化合物22A和24A是最有效的那些(IC 50 ≈2.0纳米)具有良好的药代动力学曲线。化合物22a表现出稳定的药理作用。3 mg / kg口服剂量可在24小时内抑制DPP-4活性> 80%,这与长效对照奥格列汀的表现相当。此外,22a在改善葡萄糖耐量方面的功效也与奥格列汀相当。在这项研究中,不仅确定了有前途的DPP-4抑制剂(长效抗糖尿病药,而且临床上需要),而且成功实现了目标鱼的对接和药物化学策略。
4-Trifluoromethanesulfonamidyl prolinol tert-butyldiphenylsilyl ether as a highly efficient bifunctional organocatalyst for Michael addition of ketones and aldehydes to nitroolefins
作者:Chao Wang、Chun Yu、Changlu Liu、Yungui Peng
DOI:10.1016/j.tetlet.2009.02.211
日期:2009.5
4-Trifluoromethanesulfonamidyl prolinol tert-butyldiphenylsilyl ether bifunctionalorganocatalyst 3a is a highly efficient catalyst for the asymmetric Michaeladdition reactions of ketones and aldehydes to nitrostyrenes, leading to syn-selective adducts with excellent yields (>99%), high diastereoselectivities (up to 99:1 dr) and excellent enantioselectivities (up to 99% ee). Control experiments suggested that the
Synthesis of substituted nitroolefins: a copper catalyzed nitrodecarboxylation of unsaturated carboxylic acids
作者:Balaji V. Rokade、Kandikere Ramaiah Prabhu
DOI:10.1039/c3ob41408f
日期:——
A novel, mild and convenient method for the nitrodecarboxylation of substituted cinnamic acid derivatives to their nitroolefins is achieved using a catalytic amount of CuCl (10 mol%) and tert-butyl nitrite (2 equiv.) as a nitrating agent in the presence of air. This reaction provides a useful method for the synthesis of β,β-disubstituted nitroolefin derivatives, which are generally difficult to access from other conventional methods. Additionally, this reaction is selective as the E-isomer of the acid derivatives furnishes the corresponding E-nitroolefins. One more salient feature of the method is, unlike other methods, no metal nitrates or HNO3 are employed for the transformation.
[EN] CARBOLINE CARBOXAMIDE COMPOUNDS USEFUL AS KINASE INHIBITORS<br/>[FR] COMPOSÉS DE CARBOLINE-CARBOXAMIDE UTILES EN TANT QU'INHIBITEURS DE KINASES
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2011159857A1
公开(公告)日:2011-12-22
Compounds having formula (I), and enantiomers, and diastereomers, stereoisomers, pharmaceutically-acceptable salts thereof, formula (I) are useful as kinase modulators, including Btk modulation.