Synthesis of Substituted 1,3-Propanesultams from<i>N</i>-Substituted 2-Amino Alcohols
作者:Gary F. Cooper
DOI:10.1055/s-1991-26593
日期:——
Substituted 1,3-propanesultams (isothiazolidine 1,1-dioxides) 3a-c have been prepared via butyllithium-mediated cyclization of the N,O-dimesylates 2a-c of N-substituted 2-amino alcohols 1a-c.
Copper-Catalyzed Amination of Primary Benzylic C−H Bonds with Primary and Secondary Sulfonamides
作者:David A. Powell、Hope Fan
DOI:10.1021/jo100197r
日期:2010.4.16
A room-temperature, copper-catalyzed amination of primary benzylic C-H bonds with primary and secondary sulfonamides is described. The reaction is applicable to the coupling of a range of primary and secondary benzylic hydrocarbons with a diverse set of sulfonamides and is tolerant of substitution on both coupling partners. Factors which influence the selectivity of C-H functionalization between primary and secondary sites are examined.
A new synthesis of sultams from amino alcohols
作者:Nitin Lad、Rajiv Sharma、Victor E. Marquez、Malcolm Mascarenhas
DOI:10.1016/j.tetlet.2013.09.021
日期:2013.11
The base-mediated cyclization of N,O-dimesylate derivatives of cyclic and acyclic amino alcohols provides a simple access to five- and six-member sultams: isothiazolidine-1,1-dioxides and thiazinane-1,1-dioxides respectively. (C) 2013 Elsevier Ltd. All rights reserved.
[EN] The present invention provides heterocyclic derivatives that modulate the activity of stearoyl-CoA desaturase. Methods of using such derivatives to modulate the activity of stearoyl-CoA desaturase and pharmaceutical compositions comprising such derivatives are also encompassed. [FR] La présente invention concerne des dérivés hétérocycliques qui modulent l'activité de la stéaroyl-CoA désaturase. L'invention concerne également des procédés d'utilisation de tels dérivés pour moduler l'activité de la stéaroyl-CoA désaturase et des compositions pharmaceutiques qui comprennent de tels dérivés.
Dipeptide vinyl sultams: Synthesis via the Wittig–Horner reaction and activity against papain, falcipain-2 and Plasmodium falciparum
作者:Cláudia Valente、Rita C. Guedes、Rui Moreira、Jim Iley、Jiri Gut、Philip J. Rosenthal
DOI:10.1016/j.bmcl.2006.04.079
日期:2006.8
The synthesis of phosphonate derivatives of N-phenyl- and N-benzyl-gamma- and delta-sultams, and their application in the Wittig-Hornerreaction with N-Boc-L-phenylalanine aldehyde to afford E- and Z-isomers, are described. These compounds were further processed to provide five dipeptide vinyl sultams, which were found to be inactive against papain at concentrations up to 50 microM. In contrast, vinyl