A New Method for the Stereoselective Synthesis of α- and β-Glycosylamines Using the Burgess Reagent
作者:K. C. Nicolaou、Scott A. Snyder、Annie Z. Nalbandian、Deborah A. Longbottom
DOI:10.1021/ja049293c
日期:2004.5.1
Although glycosylamines constitute an important group of carbohydrates from the standpoint of biology and medicine, methods for their synthesis typically lack substrate generality and/or result in variable stereoselectivity, especially in complex contexts. In this communication, we report an operationally simple method for the synthesis of both α- and β-glycosylamines using the Burgessreagent that overcomes
A novel preparation of sulfilimines from the corresponding sulfoxides using the Burgess reagent is described. The reaction is general to dialkyl- and aryl alkyl sulfoxides and proceeds under mild conditions in benzene. A variety of protecting groups can be introduced on the nitrogen of the sulfilimine by choosing the appropriate Burgess reagent.
A Novel Regio- and Stereoselective Synthesis of Sulfamidates from 1,2-Diols Using Burgess and Related Reagents: A Facile Entry into β-Amino Alcohols We thank Professor K. Barry Sharpless for the gracious donation of several of the starting diol substrates. We also thank Drs. D. H. Huang, G. Suizdak, and R. Chadja for NMR spectroscopic, mass spectrometric, and X-ray crystallographic assistance, respectively. Financial support for this work was provided by The Skaggs Institute for Chemical Biology, predoctoral fellowships from the National Science Foundation and Pfizer (S.A.S.), a postdoctoral fellowship from The Skaggs Institute for Chemical Biology (X.H.), and grants from American Biosciences, Amgen, Array Biopharma, Boehringer-Ingelheim, Glaxo, Hoffman-LaRoche, DuPont, Merck, Novartis, Pfizer, and Schering Plough.
作者:K. C. Nicolaou、Xianhai Huang、Scott A. Snyder、Paraselli Bheema Rao、Marco Bella、Mali V. Reddy