Dihydroquinazolines enhance 20S proteasome activity and induce degradation of α-synuclein, an intrinsically disordered protein associated with neurodegeneration
作者:Taylor J. Fiolek、Christina L. Magyar、Tyler J. Wall、Steven B. Davies、Molly V. Campbell、Christopher J. Savich、Jetze J. Tepe、R. Adam Mosey
DOI:10.1016/j.bmcl.2021.127821
日期:2021.3
traditional small molecule drug design and are often referred to as “undruggable”. The 20Sproteasome is the main protease that targets IDPs for degradation and therefore small molecule 20Sproteasome enhancement presents a novel therapeutic strategy by which these undruggable IDPs could be targeted. The concept of 20S activation is still relatively new, with few potent activators having been identified
Iron‐Catalyzed Oxidative Coupling Reaction of Isocyanides and Simple Alkanes towards Amide Synthesis
作者:Hongdong Yuan、Zhiqiang Liu、Yushu Shen、Hongbin Zhao、Chunju Li、Xueshun Jia、Jian Li
DOI:10.1002/adsc.201801619
日期:2019.4.23
An iron‐catalyzed oxidative coupling reaction of isocyanide and readily available alkane has been disclosed. In the presence of a catalytic amount of FeCp2 (10 mol%), heating a mixture of alkane, isocyanide, and DTBP in DCE allows for the formation of an amide. This reaction tolerates many simple alkanes including cycloalkanes and chain alkanes. Furthermore, a series of aromatic isocyanides having
Base-catalyzed synthesis of aryl amides from aryl azides and aldehydes
作者:Sheng Xie、Yang Zhang、Olof Ramström、Mingdi Yan
DOI:10.1039/c5sc03510d
日期:——
Aryl amides are efficiently synthesized from the rearrangement of triazolines, which formed in the base-catalyzed azide–aldehyde cycloaddtion.
芳基酰胺可以通过三唑烯的重排合成,三唑烯是在碱催化的叠氮化物-醛环加成中形成的。
One-Pot Tandem Assembly of Amides, Amines, and Ketones: Synthesis of C4-Quaternary 3,4- and 1,4-Dihydroquinazolines
作者:Molly V. Campbell、Alexei V. Iretskii、R. Adam Mosey
DOI:10.1021/acs.joc.0c01308
日期:2020.9.4
the synthesis of diverse C4-quaternary 3,4-dihydroquinazolines fromamides, amines, and ketones has been developed. The one-pot reaction involves successive triflic anhydride mediated amide dehydration, ketimine addition, and Pictet–Spengler-like cyclization processes and affords products in up to 92% yield. Conversion of 3,4-dihydroquinazolines to the corresponding 1,4-dihydroquinazolines via a two-step
Rh(CAAC)-Catalyzed Arene Hydrogenation: Evidence for Nanocatalysis and Sterically Controlled Site-Selective Hydrogenation
作者:Ba L. Tran、John L. Fulton、John C. Linehan、Johannes A. Lercher、R. Morris Bullock
DOI:10.1021/acscatal.8b02589
日期:2018.9.7
starting from [(CAAC)Rh(COD)Cl] (CAAC = cyclic alkyl amino carbene). Kinetic, mechanistic, and Rh K-edge XAFS studies showed formation of Rh nanoparticles from [(CAAC)Rh(COD)Cl], in contrast to a previous report of [(CAAC)Rh(COD)Cl] functioning as a homogeneous catalyst for arene hydrogenation. We determined that the site-selective arene hydrogenation catalyzed by this system is under steric control, as