854448-82-1Relevant academic research and scientific papers
N -Boc amines to oxazolidinones via Pd(II)/bis-sulfoxide/br?nsted acid Co-catalyzed allylic C-H oxidation
Osberger, Thomas J.,White, M. Christina
supporting information, p. 11176 - 11181 (2014/08/18)
A Pd(II)/bis-sulfoxide/Br?nsted acid catalyzed allylic C-H oxidation reaction for the synthesis of oxazolidinones from simple N-Boc amines is reported. A range of oxazolidinones are furnished in good yields (avg 63%) and excellent diastereoselectivities (avg 15:1) to furnish products regioisomeric from those previously obtained using allylic C-H amination reactions. Mechanistic studies suggest the role of the phosphoric acid is to furnish a Pd(II)bis-sulfoxide phosphate catalyst that promotes allylic C-H cleavage and π-allylPd functionalization with a weak, aprotic oxygen nucleophile and to assist in catalyst regeneration.
Electrophilic rearrangements of chiral amides: A traceless asymmetric α-allylation
Peng, Bo,Geerdink, Danny,Maulide, Nuno
supporting information, p. 14968 - 14971 (2013/11/06)
A one-pot protocol for the asymmetric α-allylation reaction is reported relying on a key efficient asymmetric Claisen rearrangement, triggered by electrophilic activation of chiral pseudoephedrine amides. Subsequent reduction or hydrolysis of the resulting iminium ions provides highly enantioenriched α-allylic aldehydes or carboxylic acids in a traceless manner. Compared to traditional alternatives which make use of strongly basic conditions, the work presented herein displays unprecedented functional group tolerance.
Antagonists of the human CCR5 receptor as anti-HIV-1 agents. Part 2: Structure-activity relationships for substituted 2-aryl-1-[N-(methyl)-N-(phenylsulfonyl)amino]-4-(piperidin-1-yl)butanes
Finke, Paul E.,Meurer, Laura C.,Oates, Bryan,Mills, Sander G.,MacCoss, Malcolm,Malkowitz, Lorraine,Springer, Martin S.,Daugherty, Bruce L.,Gould, Sandra L.,DeMartino, Julie A.,Siciliano, Salvatore J.,Carella, Anthony,Carver, Gwen,Holmes, Karen,Danzeisen, Renee,Hazuda, Daria,Kessler, Joseph,Lineberger, Janet,Miller, Michael,Schleif, William A.,Emini, Emilio A.
, p. 265 - 270 (2007/10/03)
(2S)-2-(3,4-Dichlorophenyl)-1-[N-(methyl)-N-(phenylsulfonyl)amino]-4-[spiro(2 ,3-dihydrobenzthiophene-3,4′-piperidin-1′yl)]butane S-oxide (3) has been identified as a potent CCR5 antagonist lead structure having an IC50 = 35 nM. Herein, we describe the structure-activity relationship studies directed toward the requirement for and optimization of the C-2 phenyl fragment. The phenyl was found to be important for CCR5 antagonism and substitution was limited to small moieties at the 3-position (13 and 16: X = H, 3-F, 3-Cl, 3-Me).
