An expeditious three-component, one-pot, sequential synthesis of a common block tetrasaccharide
fragment Manp-(1→3)-Manp-(1→2)-Manp-(1→2)-Manp related to the pentasaccharide repeating
unit of the O-antigen of Escherichia Coli O9, Klebsiella pneumonia O3, and Hafnia alvei PCM 1223 with minimal protecting group manipulation is reported.
Key words
three-component - one-pot - tetrasaccharide -
Escherichia coli O9 -
Klebsiella pneumonia O3