Palladium-Catalyzed Carbo-Oxygenation of Propargylic Amines using in Situ Tether Formation
作者:Phillip D. G. Greenwood、Erwann Grenet、Jerome Waser
DOI:10.1002/chem.201900020
日期:2019.2.26
chiral auxiliaries, and catalysts. This work reports a new method for the palladium‐catalyzed oxyalkynylation and oxyarylation of propargylic amines. The reaction is perfectly regioselective based on the in situ introduction of a hemiacetal tether derived from trifluoroacetaldehyde. cis‐Selective carbo‐oxygenation was achieved for terminal alkynes, whereas internal alkynes gave trans‐carbo‐oxygenation products
Inhibitors of VEGF receptor and HGF receptor signaling
申请人:Saavedra Mario Oscar
公开号:US20070004675A1
公开(公告)日:2007-01-04
The invention relates to the inhibition of VEGF receptor signaling and HGF receptor signaling. The invention provides compounds and methods for inhibiting VEGF receptor signaling and HGF receptor signaling. The invention also provides compositions and methods for treating cell proliferative diseases and conditions
This invention relates to compounds that inhibit protein tyrosine kinase activity. In particular the invention relates to compounds that inhibit the protein tyrosine kinase activity of growth factor receptors, resulting in the inhibition of receptor signaling, for example, the inhibition of VEGF receptor signaling and HGF receptor signaling. More particularly, the invention relates to compounds, compositions and methods for the inhibition of VEGF receptor signaling and HGF receptor signaling. The invention also provides compositions and methods for treating cell proliferative diseases and conditions.
Palladium‐Catalyzed Carboxy‐Alkynylation of Propargylic Amines Using Carbonate Salts as Carbon Dioxide Source
作者:Phillip D. G. Greenwood、Jerome Waser
DOI:10.1002/ejoc.201900500
日期:2019.9
A palladium‐catalyzed multicomponent reaction of propargylic amines, alkynyl bromides and cesium hydrogen carbonate to access oxazolidinones is reported. In contrast to previous reports, only a slight excess of cesium hydrogen carbonate is used as a surrogate of carbondioxide. The reaction gives access to oxazolidinones bearing alkyl‐ and aryl polysubstituted enynes in good yield and very high E stereoselectivity