Chemo- and Site-Selective Alkyl and Aryl Azide Reductions with Heterogeneous Nanoparticle Catalysts
作者:Venkatareddy Udumula、S. Hadi Nazari、Scott R. Burt、Madher N. Alfindee、David J. Michaelis
DOI:10.1021/acscatal.6b01217
日期:2016.7.1
to generating new leads for drug discovery. Herein, we show that heterogeneous nanoparticle catalysts enable site-selective monoreduction of polyazide substrates for the generation of aminoglycoside antibiotic derivatives. The nanoparticle catalysts are highly chemoselective for reduction of alkyl and aryl azides under mild conditions and in the presence of a variety of easily reduced functional groups
Palladium-catalyzed cross-coupling reaction of azides with isocyanides
作者:Zhen Zhang、Zongyang Li、Bin Fu、Zhenhua Zhang
DOI:10.1039/c5cc05981j
日期:——
A palladium-catalyzed cross-coupling reaction of azides with isocyanides is developed, providing a general synthetic route to unsymmetric carbodiimides.
efficient Pd/C-catalyzed carbonylation of both aliphatic and aromatic azides in the presence of amines is reported. Serving as the widely existed fragments in an array of biological pharmaceuticals, functionalized unsymmetrical ureas were straightforwardly synthesized by using readily available and cheap azides with amines under CO atmosphere, with the extrusion of N2 as the only byproduct. It was found
Orexigenic effect modulation: The growthhormonesecretagoguereceptor (GHSR) is the receptor for the peptide hormone ghrelin. The β-arrestin pathway of this receptor is recognized as a potential drug target, and hence there is a strong need for modulators of this pathway. In this study we discovered a putative β-arrestin-biased superagonist by performing calcium assays in which the activation of the
have been pointed out, modern screeninglibraries are filled with planar, sp2 -rich components. Compounds that are sp3 -rich are difficult to synthesize, and thus we aimed to invent an efficient method to construct sp3 -rich libraries. By modifying sp3 -rich 7-azanorbornane scaffolds through click chemistry, we efficiently prepared a small set of compounds. These compounds were not only sp3 -rich, but