Synthesis of Adamantylglycine Using a Diastereoselective Grignard-to-Nitrone Addition
作者:Volker Jäger、Alevtina Baskakova、Wolfgang Frey
DOI:10.1055/s-0030-1258235
日期:2010.11
tert-leucine, adamantylglycine has so far received little attention. Here, a new, practical synthesis of adamantylglycine is described. This is based on a highly diastereoselective addition of adamantyl Grignardreagent to 2,3-O-cyclohexylideneglyceraldehyde N-benzylnitrone, mediated by the Lewis acid diethylaluminum chloride. Adamantylglycine is obtained from the nitrone in 6 steps and 28% yield as