Formation of Nucleophilic Allylboranes from Molecular Hydrogen and Allenes Catalyzed by a Pyridonate Borane that Displays Frustrated Lewis Pair Reactivity
allylboranes from H2 and allenes mediated by a pyridonate borane that displays frustrated‐Lewis‐pairreactivity. Experimental and computational mechanistic investigations reveal that upon H2 activation, the covalently bound pyridonate substituent becomes a datively bound pyridone ligand. Dissociation of the formed pyridone borane complex liberates Piers borane and enables a hydroboration of the allene. The allylboranes
[EN] SMALL MOLECULE INHIBITORS OF NICOTINAMIDE PHOSPHORIBOSYLTRANSFERASE (NAMPT)<br/>[FR] INHIBITEURS À PETITE MOLÉCULE DE NICOTINAMIDE PHOSPHORIBOSYLTRANSFÉRASE (NAMPT)
申请人:UNIV MISSOURI
公开号:WO2013082150A1
公开(公告)日:2013-06-06
The present invention relates to novel compounds, their use as anti-cancer agents and their synthesis. In particular, the compounds contain cluster boron moieties such as carborane or a borohydride and act as inhibitors for the enzyme Nampt. The biological properties of the inventive cluster boron compounds, in terms of biological inhibition and antiproliferative effect, are greater than other small molecule inhibitors of Nampt.
SMALL MOLECULE INHIBITORS OF NICOTINAMIDE PHOSPHORIBOSYLTRANSFERASE (NAMPT)
申请人:The Curators of the University of Missouri
公开号:US20150322093A1
公开(公告)日:2015-11-12
The present invention relates to novel compounds, their use as anti-cancer agents and their synthesis. In particular, the compounds contain cluster boron moieties such as carborane or a borohydride and act as inhibitors for the enzyme Nampt. The biological properties of the inventive cluster boron compounds, in terms of biological inhibition and antiproliferative effect, are greater than other small molecule inhibitors of Nampt.
A chemo- and regioselective 1,2-carboboration of arylallenes by alkenylboranes, formed in situ by hydroboration of alkynes with Piers’ borane (HB(C6F5)2) is reported. This novel 1,2-carboboration and a subsequent Suzuki-Miyaura coupling were used for the synthesis of twenty new aryl substituted 1,4-dienes.
Chlorofluorocarbene addition to alkynes: a novel path to cyclopropenones with uncommon substituents (cyclopropenone chemistry, part 11)
作者:Eckehard V. Dehmlow、Andreas Winterfeldt
DOI:10.1016/s0040-4020(01)80121-6
日期:1989.1
Phase transfer catalytically generated chlorofluorocarbene adds to alkynes much more readily than dichlorocarbene. Some sterically shielded or critically substituted compounds that do not give addition with CCl2 can be reacted with CClF. Chlorofluorocyclopropenes thus formed are hydrolyzed to cyclopropenones in situ. Hitherto unknown α-oxygen functional cyclopropenones were also prepared for the first