Fe/Cr- and Co/Cr-Mediated Catalytic Asymmetric 2-Haloallylations of Aldehydes
作者:Michio Kurosu、Mei-Huey Lin、Yoshito Kishi
DOI:10.1021/ja045557j
日期:2004.10.1
is reported. The coupling reaction is effected by the use of a chiral sulfonamide-Cr complex (prepared in situ from 1d, CrBr3, Fe(III) or from Co(II), Et3N, and Mn), TMSCl, and 2,6-lutidine. The method reported here is operationally simple and scalable, furnishing 3-halohomoallylic alcohols with a synthetically useful level of enantiomericexcess.
The totalsynthesis of 4-methoxydecanoic acid and 4-methoxyundecanoic acid in racemic and stereoselective [(R) and (S)] forms has been accomplished. For stereoselective synthesis of the compounds (S) and (R)-BINOL complexes have been used to generate the required chiral centres. The antifungal activity of these compounds has been studied against different organisms and the results were found to be impressive
Diverted Total Synthesis of Promysalin Analogs Demonstrates That an Iron-Binding Motif Is Responsible for Its Narrow-Spectrum Antibacterial Activity
作者:Andrew D. Steele、Colleen E. Keohane、Kyle W. Knouse、Sean E. Rossiter、Sierra J. Williams、William M. Wuest
DOI:10.1021/jacs.6b03373
日期:2016.5.11
understand the mode of action of this natural product, we synthesized 16 analogs utilizing diverted total synthesis (DTS). Our analog studies revealed that the bioactivity of promysalin is sensitive to changes within its hydrogen bond network whereby alteration has drastic biological consequences. The DTS library not only yielded three analogs that retained potency but also provided insights that resulted in
[EN] NOVEL PROMYSALIN ANALOGUES AND METHODS OF USE THEREOF<br/>[FR] NOUVEAUX ANALOGUES DE PROMYSALINE ET PROCÉDÉS POUR LES UTILISER
申请人:TEMPLE UNIVERSITY-OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION
公开号:WO2017184558A1
公开(公告)日:2017-10-26
The present invention includes novel analogs of promysalin useful in preventing or treating a microbial infection. The present invention also includes methods preventing or treating a microbial infection in a subject in need thereof, the method comprising administering to the subject an effective amount of a compound of the invention.
Application of Tridentate Bis(oxazoline) Ligands in Catalytic Asymmetric Nozaki–Hiyama Allylation and Crotylation: An Example of High Enantioselection with a Non-Symmetric Bis(oxazoline) Ligand
作者:Helen A. McManus、Pier Giorgio Cozzi、Patrick J. Guiry
DOI:10.1002/adsc.200505332
日期:2006.3
symmetric and non-symmetric bis(oxazoline) ligands was applied in the Nozaki–Hiyama allylation and crotylation of benzaldehyde. It was found that both the magnitude and sense of the asymmetric induction depended strongly on the nature and combination of the oxazoline substituents. For both reactions, the non-symmetric tert-butyl/benzyl-substituted ligand proved to be the optimal ligand and was applied successfully