Ligand-Controlled Nickel-Catalyzed Tandem Isomerization/Regiodivergent Hydroheteroarylation of α-Alkenes with Heteroarenes
作者:Sajid Imran、Wen-Hui Jin、Rui-Peng Li、Nadia Ismaeel、Hong-Mei Sun
DOI:10.1021/acs.orglett.2c03689
日期:2022.12.9
We herein describe an accessible ligand-controlled nickel-catalyzed tandem isomerization/regiodivergent hydroheteroarylation of α-alkenes with a series of heteroarenes, wherein the NHC ligand of heteroleptic Ni(II) complexes of the type Ni(NHC)[P(OEt)3]Br2 displayed significant effects on regulation. In the presence of NaOtBu, Ni(IMes)[P(OEt)3]Br2 enables C═C bond isomerization of α-alkenes over up
Antinociceptive activity of furan-containing congeners of improgan and ranitidine
作者:L.B. Hough、W.M.P.B. Menge、A.C. van de Stolpe、J.W. Nalwalk、R. Leurs、I.J.P. de Esch
DOI:10.1016/j.bmcl.2007.07.060
日期:2007.10
Furan-containing congeners of the histamine H-2 receptor antagonist ranitidine were synthesized and tested for improgan-like antinociceptive activity. The most potent ligand of the series, VUF5498, is the most potent improgan-like agent described to date (ED50 = 25 nmol, icv). This compound is approximately equal in potency with morphine. These non-imidazole, improgan-like pain relievers further define the structural requirements for analgesics of this class and are important tools for ongoing mechanism-based studies. (c) 2007 Elsevier Ltd. All rights reserved.
Iridium Catalysts with Bicyclic Pyridine–Phosphinite Ligands: Asymmetric Hydrogenation of Olefins and Furan Derivatives
作者:Stefan Kaiser、Sebastian P. Smidt、Andreas Pfaltz