Electrochemically Promoted Nickel-Catalyzed Carbon–Sulfur Bond Formation
作者:Yang Wang、Lingling Deng、Xiaochen Wang、Zhengguang Wu、Yi Wang、Yi Pan
DOI:10.1021/acscatal.8b04633
日期:2019.3.1
This work describes a nickel-catalyzed Ullmann-type thiolation of aryl iodidesunder mild electrochemical conditions. The simple undivided cell with graphene/nickel foam electrode setups offers excellent substrate tolerance, affording aryl and alkyl sulfides in good chemical yields. Furthermore, the mechanism for this electrochemical cross-coupling reaction has been investigated by cyclic voltammetry
This invention relates to novel glucocorticoid receptor agonists of formula (I):
and to processes and intermediates for their preparation. The present invention also relates to pharmaceutical compositions containing these compounds, to their combination with one or more other therapeutic agents, as well as to their use for the treatment of a number of inflammatory and allergic diseases, disorders and conditions.
C(sp<sup>2</sup>)–S cross-coupling reactions with nickel, visible light, and mesoporous graphitic carbon nitride
作者:Maksim Nikitin、Florence Babawale、Sena Tastekin、Markus Antonietti、Indrajit Ghosh、Burkhard König
DOI:10.1039/d3gc04517j
日期:——
Cross-couplingreactions play a vital role in modern organic synthesis, enabling the construction of necessary C–C or C–(het)atom bonds for synthetic transformations. Although C(sp2)–C and C(sp2)–N cross-couplingreactions have received significant attention, recent advancements have also highlighted the significance of C(sp2)–S cross-couplingreactions. These reactions lead to the synthesis of valuable
Sulfanylphthalonitrile analogues as selective and potent inhibitors of monoamine oxidase B
作者:Mietha M. Van der Walt、Gisella Terre’Blanche、Anna C.U. Lourens、Anél Petzer、Jacobus P. Petzer
DOI:10.1016/j.bmcl.2012.10.070
日期:2012.12
It has recently been reported that nitrile containing compounds frequently act as potent monoamine oxidase B (MAO-B) inhibitors. Modelling studies suggest that this high potency inhibition may rely, at least in part, on polar interactions between nitrile functional groups and polar moieties within the MAO-B substrate cavity. In an attempt to identify potent and selective inhibitors of MAO-B and to contribute to the known structure-activity relationships of MAO inhibition by nitrile containing compounds, the present study examined the MAO inhibitory properties of series of novel sulfanylphthalonitriles and sulfanylbenzonitriles. The results document that the evaluated compounds are potent and selective MAO-B inhibitors with most homologues possessing IC50 values in the nanomolar range. In general, the sulfanylphthalonitriles exhibited higher binding affinities for MAO-B than the corresponding sulfanylbenzonitrile homologues. Among the compounds evaluated, 4-[(4-bromobenzyl)sulfanyl]phthalonitrile is a particularly promising inhibitor since it displayed a high degree of selectivity (8720-fold) for MAO-B over MAO-A, and potent MAO-B inhibition (IC50 = 0.025 mu M). Based on these observations, this structure may serve as a lead for the development of therapies for neurodegenerative disorders such as Parkinson's disease. (C) 2012 Elsevier Ltd. All rights reserved.