Simple and Rapid Procedures for the Synthesis of 5-Acylated 4β-Acylamido- and 4β-Acetoxyneuraminic Acid Glycals
作者:Irene S. Agnolin、Paola Rota、Pietro Allevi、Antonio Gregorio、Mario Anastasia
DOI:10.1002/ejoc.201201001
日期:2012.10.8
Two simple and rapidprocedures affording 4β-acylamido- and 4β-acetoxyneuraminic acid glycals acylated or perfluoroacylated at the 5-amino group are reported. The first protocol avoids the formation of oxazolines to synthesize the 4β-acetamido glycals through the Ritter reaction. The second passes through the oxazoline derivative to prepare 4β-acetoxyneuraminic acid glycals. Both protocols start from