An Efficient Route to All Stereoisomeric Enantiopure 6-Amino-3-alkyl-3- azabicyclo[3.2.1]octane-6-carboxylic Acids
作者:Maria Luisa Gelmi、Cristian Cattaneo、Sara Pellegrino、Francesca Clerici、Marina Montali、Claudia Martini
DOI:10.1021/jo7019702
日期:2007.12.1
A single-step synthesis on a gram scale of four pure stereoisomers of the 6-amino-3-azabicyclo[3.2.1]octane-6-carboxylic acid was carried out using (R)-1-phenylethylamine to confer chirality. The phenylethyl group, and the p-methoxy group linked to the N-atom, are easily removed by hydrogenolysis to afford the corresponding NH-3 derivatives. A series of N-3-alkyl compounds were prepared by way of a