Restricting the flexibility of crosslinked, interfacial peptide inhibitors of HIV-1 protease
摘要:
Interfacial peptides of HIV-1 protease were crosslinked with varying length alkyl-chains containing either a single cia or trans double bond, or a triple bond to remove degrees of freedom within the tethers. The synthesis of these compounds and their effects on the activity of HIV-1 protease are described. (C) 1998 Elsevier Science Ltd. All rights reserved.
Robust Alkyne Metathesis Catalyzed by Air Stable d<sup>2</sup> Re(V) Alkylidyne Complexes
作者:Mingxu Cui、Wei Bai、Herman H. Y. Sung、Ian D. Williams、Guochen Jia
DOI:10.1021/jacs.0c06581
日期:2020.8.5
We report in this communication the first example of catalytic alkynemetathesisreactions mediated by well-defined non-d0 alkylidyne complexes. The air-stable d2 Re(V) alkylidyne complex Re4, bearing two PO-chelating ligands and a labile pyridine ligand, could catalyze homo-metathesis of internal alkynes with a broad substrate scope, including alcohols, amines and even carboxylic acids. The catalyst
我们在此通讯中报告了由明确定义的非 d0 烷炔配合物介导的催化炔复分解反应的第一个例子。空气稳定的 d2 Re(V) 亚烷基配合物 Re4,带有两个 PO 螯合配体和一个不稳定的吡啶配体,可以催化具有广泛底物范围的内炔的均位复分解,包括醇、胺甚至羧酸。该催化剂在固体和溶液状态下都可以耐受加热、空气和水分,催化复分解反应可以在湿溶剂中正常进行。
Alkyne Metathesis with d<sup>2</sup>Re(V) Alkylidyne Complexes Supported by Phosphino-Phenolates: Ligand Effect on Catalytic Activity and Applications in Ring-Closing Alkyne Metathesis
作者:Mingxu Cui、Herman H. Y. Sung、Ian D. Williams、Guochen Jia
DOI:10.1021/jacs.2c00368
日期:2022.4.13
Re(V) alkylidyne complexes bearing two decorated phosphino-phenolates (POs) and a labile pyridine ligand were prepared that can efficiently promote alkyne metathesis reactions in toluene. The relative activity of these complexes varies with the PO ligands. Complexes with an electron-rich metal center have a higher activity. Ligand exchange experiments suggest that the pyridine ligands of the Re(V) alkylidynes
A family of d2 Re(V) alkylidyne complexes bearing two decorated phosphino-phenolates (POs) and a labile pyridine ligand were prepared that can efficiently promote alkyne metathesis reactions in toluene. The relative activity of these complexes varies with the PO ligands. Complexes with an electron-rich metal center have a higher activity. Ligand exchange experiments suggest that the pyridine ligands
“Canopy Catalysts” for Alkyne Metathesis: Molybdenum Alkylidyne Complexes with a Tripodal Ligand Framework
作者:Julius Hillenbrand、Markus Leutzsch、Ektoras Yiannakas、Christopher P. Gordon、Christian Wille、Nils Nöthling、Christophe Copéret、Alois Fürstner
DOI:10.1021/jacs.0c04742
日期:2020.6.24
certain stability toward water, which marks a big leap forward in metal alkylidyne chemistry in general. At the same time, they tolerate many donor sites, including basic nitrogen and numerous heterocycles. This aspect is substantiated by applications to polyfunctional (natural) products. A combined spectroscopic, crystallographic, and computational study provides insights into structure and electronic
A new type of molybdenum alkylidyne catalysts for alkynemetathesis is described, which is distinguished by an unconventional podand topology. These structurally well-definedcomplexes are easy to make on scale and proved to be tolerant toward numerous functional groups; even certain protic substituents were found to be compatible. The new catalysts were characterized by X-ray crystallography and by
描述了一种用于炔复分解的新型钼亚烷基催化剂,其特点是非常规的荚状拓扑结构。这些结构明确的复合物很容易大规模制造,并且被证明对多种官能团具有耐受性;甚至发现某些质子取代基是相容的。新催化剂通过 X 射线晶体学和光谱手段(包括 95 Mo NMR)进行了表征。
JAYASURIYA, NIMAL;BOSAK, STANISLAV;REGEN, STEVEN L., J. AMER. CHEM. SOC., 112,(1990) N5, C. 5844-5850
作者:JAYASURIYA, NIMAL、BOSAK, STANISLAV、REGEN, STEVEN L.