A ring closing metathesis strategy for carbapyranosides of xylose and arabinose
作者:Clayton E. Mattis、David R. Mootoo
DOI:10.1016/j.carres.2016.05.010
日期:2016.6
The synthesis of beta-carba-xylo and arabino pyranosides of cholestanol is described. The synthetic strategy, which is analogous to the Postema approach to C-glycosides, centers on the ringclosingmetathesis of an enol ether-alkene precursor to give a cyclic enol ether that is elaborated to a carba-pyranoside via hydroboration-oxidation on the olefin. The method, which is attractive for its modularity
Protecting-Group-Free Synthesis of Amines: Synthesis of Primary Amines from Aldehydes via Reductive Amination
作者:Emma M. Dangerfield、Catherine H. Plunkett、Anna L. Win-Mason、Bridget L. Stocker、Mattie S. M. Timmer
DOI:10.1021/jo100004c
日期:2010.8.20
New methodology for the protecting-group-free synthesis of primary amines is presented. By optimizing the metal hydride/ammonia mediated reductive amination of aldehydes and hemiacetals, primary amines were selectively prepared with no or minimal formation of the usual secondary and tertiary amine byproduct. The methodology was performed on a range of functionalized aldehyde substrates, including in
Stereoselective Strecker and Carbamate Annulation Methodology for the Synthesis of 1-Amino-1,2,5-trideoxy-2,5-imino-L-iditol
作者:Anna L. Win-Mason、Emma M. Dangerfield、Peter C. Tyler、Bridget L. Stocker、Mattie S. M. Timmer
DOI:10.1002/ejoc.201100523
日期:2011.7
efficient and highly stereoselectivesynthesis of L-ido-aminoiminosugar 3 has been described. Key in the synthesis is the application of a diastereoselective Strecker reaction and the extension of our carbamateannulationmethodology to protected and functionalized alkenylamines. In addition, the identification of the primary iodide as a key intermediate during the carbamateannulation reaction provides