Ring-Rearrangement Metathesis of Nitroso Diels-Alder Cycloadducts
作者:Guillaume Vincent、Cyrille Kouklovsky
DOI:10.1002/chem.201002558
日期:2011.3.1
various ring sizes, which contain a NO bond. These scaffolds are of synthetic relevance for the generation of molecular diversity and to the total synthesis of alkaloids. The observation of unexpected reactions, such as epimerization or one‐carbon homologation of the alkene side chain, is also reported.
Tethered Aminohydroxylation (TA) Reaction of Amides
作者:Timothy J. Donohoe、Cedric K. A. Callens、Amber L. Thompson
DOI:10.1021/ol900631y
日期:2009.6.4
The first examples of amide-tethered aminohydroxylationreactions, catalyzed by osmium, showing that the use of N−O-based reoxidants are essential for success, are reported. The system that is described is compatible with a variety of different alkene substitution patterns and ring sizes and works with low loadings in both cyclic and acyclic systems. The levels of diastereoselectivity that were observed
Synthetic Approaches to Racemic Porantheridine and 8-Epihalosaline via a Nitroso Diels−Alder Cycloaddition/Ring-Rearrangement Metathesis Sequence
作者:Pierre Sancibrao、Delphine Karila、Cyrille Kouklovsky、Guillaume Vincent
DOI:10.1021/jo100768d
日期:2010.6.18
Diels−Alder cycloaddition and a ring-rearrangementmetathesis to the total synthesis of (±)-8-epihalosaline and the formal synthesis of (±)-porantheridine is described. The formation of the 2,6-trans-disubstituted piperidine backbone of porantheridine has been accomplished by addition of a Grignard reagent onto an N-benzylpiperidone followed by a highly diastereoselective reduction of the imminium intermediate
Syntheses and studies of new forms of N-sulfonyloxy β-lactams as potential antibacterial agents and β-lactamase inhibitors
作者:Serena Carosso、Marvin J. Miller
DOI:10.1016/j.bmc.2015.08.005
日期:2015.9
The synthesis of a small library of N-sulfonyloxy-2-azetidinones is reported and the preliminary results of the investigation of the biological activity of these molecules are discussed. These new multi-electrophilic beta-lactams ('electrophilic bombs') display unexpected selectivity in their antibacterial activity and beta-lactamase inhibitory activity.[GRAPHICS](c) 2015 Elsevier Ltd. All rights reserved.
Shatzmiller, Shimon; Bercovici, Sorin, Liebigs Annalen der Chemie, 1992, # 10, p. 997 - 1004