Total synthesis of the Helicobacter pylori serotype O2 O-antigen α-(1 → 2)- and α-(1 → 3)-linked oligoglucosides.

Total synthesis of the Helicobacter pylori serotype O2 O-antigen α-(1 → 2)- and α-(1 → 3)-linked oligoglucosides.
Chem Commun (Camb). 2019 Dec 06;:
Authors: Tian G, Qin C, Liu Z, Shen D, Zou X, Fu J, Hu J, Seeberger PH, Yin J
Abstract
Exploiting synergistic remote participation effects of acyl groups at the O3 and O6 positions was key to the complete α-selectivity during the total synthesis of the unique (1 → 2)- and (1 → 3)-linked α-oligoglucosides from the Helicobacter pylori O2 O-antigen. Acyl remote participation and solvent effects were found to counteract during α-stereoselective glucosylations for the first time. The resulting antigen is a lead for the development of a carbohydrate-conjugate vaccine.
PMID: 31808481 [PubMed - as supplied by publisher]

Source: Chemical Communications - December 5, 2019 Category: Chemistry Authors: Tian G, Qin C, Liu Z, Shen D, Zou X, Fu J, Hu J, Seeberger PH, Yin J Tags: Chem Commun (Camb) Source Type: research