title: Convergent synthesis of the tetrasaccharide repeating unit of the O-antigen of Shigella boydii type 9.
abstract: A convenient synthesis of the tetrasaccharide repeating unit of the O-antigen of Shigella boydii type 9 has been achieved in excellent yield using a [2 + 2] block glycosylation strategy. TEMPO-mediated selective oxidation of the primary alcohol of the tetrasaccharide derivative 8 to the carboxylic group followed by deprotection of the functional groups furnished target tetrasaccharide 1 as its 4-methoxyphenyl glycoside in high yield.
authors: Bose Institute, Division of Molecular Medicine, P-1/12, C.I.T. Scheme VII-M, Kolkata-700054, India;
authors: Abhishek
authors: A
authors: Santra
authors: Anup Kumar
authors: AK
authors: Misra