Synthesis and chemical characterization of several perfluorinated sialic acid glycals and evaluation of their in vitro antiviral activity against Newcastle disease virus
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
hypoxic stress, suggesting that a pharmacological inhibition of the GM3 synthesis could be instrumental for the development of new treatments for ischemic diseases. Herein, the synthesis of severaldephosphonated CMP‐Neu5Ac congeners and their anti‐GM3‐synthase activity is reported. Biological activity testes revealed that some inhibitors almost completely blocked the GM3‐synthase activity in vitro and reduced