Stereoselective Solid-Phase Synthesis of Chiral Piperidine Derivatives by Using an Immobilized Galactose Auxiliary
作者:Gernot Zech、Horst Kunz
DOI:10.1002/anie.200390208
日期:2003.2.17
Synthesis of a Polymer-Bound Galactosylamine and Its Application as an Immobilized Chiral Auxiliary in Stereoselective Syntheses of Piperidine and Amino Acid Derivatives
作者:Gernot Zech、Horst Kunz
DOI:10.1002/chem.200400253
日期:2004.9.6
The azide was reduced to the corresponding galactopyranosylamine, which served as a versatile chiralauxiliary in highly diastereoselective Ugi four-component condensation reactions at ambient temperature. Fluoride-induced cleavage from the polymeric support furnished N-glycosylated N-acylated alpha-amino acid amides. The reaction of the immobilized galactosylamine with aldehydes gave rise to the corresponding