Bifunctional Iminophosphorane Organocatalysts for Enantioselective Synthesis: Application to the Ketimine Nitro-Mannich Reaction
作者:Marta G. Núñez、Alistair J. M. Farley、Darren J. Dixon
DOI:10.1021/ja409121s
日期:2013.11.6
readily synthesized via a last step Staudinger reaction of a chiral organoazide and a triarylphosphine. Their application to the first general enantioselective organocatalytic nitro-Mannichreaction of nitromethane to unactivated ketone-derived imines allows the enantioselective construction of β-nitroamines possessing a fully substituted carbon atom. The reaction is amenable to multigram scale-up, and the
Center stage: Additions of nitrogen‐centered radicals to cyanamide compounds provided the first radicalsynthesis of aromatic polycyclic guanidine derivatives (see scheme). Modular assembly of the substrates allows for a rapid increase of the molecular complexity of scaffolds, which have potential applications for medicinal chemistry.
Synthesis, SAR and evaluation of [1,4′]-bipiperidinyl-4-yl-imidazolidin-2-one derivatives as novel CCR5 antagonists
作者:David M. Rotstein、Stephen D. Gabriel、Nicole Manser、Lubov Filonova、Fernando Padilla、Surya Sankuratri、Changhua Ji、Andre deRosier、Marianna Dioszegi、Gabrielle Heilek、Andreas Jekle、Paul Weller、Pamela Berry
DOI:10.1016/j.bmcl.2010.04.077
日期:2010.6
Elaboration of our previously disclosed spiropiperidine template led to the development of a series of novel CCR5 antagonists. Results of SAR exploration and preliminary lead characterization are described. (C) 2010 Elsevier Ltd. All rights reserved.