Expeditious and Practical Synthesis of Various Substituted Taurines from Amino Alcohols
作者:Jiaxi Xu、Wei Zhang、Boyuan Wang、Ning Chen、Da-Ming Du
DOI:10.1055/s-2007-1000861
日期:2008.1
Various substituted taurines have been synthesized expeditiously and practically in satisfactory to good yields directly from amino alcohols using a two-step, one-pot procedure, in which the amino alcohols undergo sulfuric acid esterification and subsequent sodium sulfite substitution. Treatment of amino-substituted secondary alcohols using the same procedure gave 2-substituted or 1,2-di-substituted
A new and expeditious asymmetric synthesis of (R)- and (S)-2-aminoalkanesulfonic acids from chiral amino alcohols
作者:Jiaxi Xu
DOI:10.1016/s0957-4166(02)00312-9
日期:2002.6
mechanistic proposal, a new and rapid asymmetricsynthesis of (R)- and (S)-2-aminoalkanesulfonic acids from chiral amino alcohols was developed. Chiral amino alcohols were converted to chiral aziridines through the Wenker method or Mitsunobu reaction and the resulting aziridines were reacted with sodium bisulfite to produce chiral α-amino alkanesulfonic acids.
A Versatile Synthesis of Various Substituted Taurines from Vicinal Amino Alcohols and Aziridines
作者:Ning Chen、Weiyi Jia、Jiaxi Xu
DOI:10.1002/ejoc.200900759
日期:2009.11
Taurine and structurally diverse substituted taurines have been synthesized by peroxyformic acid oxidation of the thiazolidine-2-thione intermediates generated from vicinal amino alcohols or aziridines and carbon disulfide. Thestereochemistry and mechanisms of the reactions are disscussed. The method is a salt-free and versatile route, convenient in terms of purification, and can be used to synthesize
Determining the Absolute Configuration of (+)-Mefloquine HCl, the Side-Effect-Reducing Enantiomer of the Antimalaria Drug Lariam
作者:Manuel Schmidt、Han Sun、Per Rogne、Gerhard K. E. Scriba、Christian Griesinger、Lars T. Kuhn、Uwe M. Reinscheid
DOI:10.1021/ja209050k
日期:2012.2.15
the absoluteconfigurations of its enantiomers have not been determined conclusively. This is needed, since the (-) enantiomer is believed to cause adverse side effects in malaria treatment resulting from binding to the adenosine receptor in the human brain. Since there are conflicting assignments based on enantioselective synthesis and anomalous X-ray diffraction, we determined the absolute configuration