The present patent application relates to acyltryptophanols of the general formula I,
in which Q, X, Y, W, R1, R2, R3, R4, R5, R8 have the meanings stated in the description. The compounds according to the invention are effective FSH antagonists and can be used for example for fertility control in men or in women, or for the prevention and/or treatment of osteoporosis.
N-donor 2-(Sulfonamido)benzamide ligands, their palladium(II) coordination species and C–C coupling catalysis efficiencies
作者:Hammed Olawale Oloyede、Helmar Görls、Joseph Anthony Orighomisan Woods、Winfried Plass、Abiodun Omokehinde Eseola
DOI:10.1016/j.molstruc.2019.07.054
日期:2019.12
A series of synthetically accessible ligands based on new 2-(R-sulfonamido)benzamide have been prepared (R = methyl for H3M; R = 4-toly for H3T and T2CN; R = 2,4,6-triisopropylphenyl for H(3)iP and HiPCN). The R-substituents were selected to vary in sizes. Allowing ligand H(3)iP and palladium acetate to stand in solvent leads to self-assembly of the well-defined solvent- and stoichiometry-controlled tetranuclear or hexanuclear coordination macromolecules Pd-4(iP)(2) and (PdHiP)(6), which were analysed by X-ray crystallography. It was observed that palladium active species for Suzuki coupling catalysis could be stabilized by these simple and synthetically assessable N-donor ligands as revealed by turnover frequencies reaching 5500h(-1). Electronic features of these N-donors appear to be more important than the steric properties. (C) 2019 Elsevier B.V. All rights reserved.
N-donor-stabilized Pd(II) species supported by sulphonamide-azo ligands: Ligand architecture, solvent co-ligands, C–C coupling
作者:Hammed Olawale Oloyede、Joseph Anthony Orighomisan Woods、Helmar Görls、Winfried Plass、Abiodun Omokehinde Eseola
DOI:10.1016/j.molstruc.2019.127030
日期:2020.1
were prepared and examined as organic ligands for stabilizing palladium active centers; R = methyl, tolyl or triiso-propylphenyl. Palladiumcomplexes, which were obtained in varying coordination environments as well as with varying complementary co-ligands (water, acetonitrile or pyridine), have been subjected to Suzuki and Heck coupling experiments in order to study molecular level ligand effects on