Syntheses of mannopyranoside 6-thiophosphate and 6-deoxy-6-thio-mannopyranoside phosphate as ligands for affinity chromatography
作者:Sebastian Kopitzki、Joachim Thiem
DOI:10.1016/j.carres.2019.05.008
日期:2019.7
Direct 6-thiophosphorylation of mannopyranoside gave both the wanted S- as well as the undesired O-phosphates. This required sequential protecting group syntheses to give mannopyranoside6-phosphate and 6-thiophosphate as well as 6-deoxy-6-thio-mannopyranoside6-phosphate, which were transformed into amino-linker compo-nents for affinity chromatography.
Synthesis and affinities of C3-symmetric thioglycoside-containing trimannosides
作者:Jingjing Bi、Chuanfang Zhao、Wei Cui、Chaoli Zhang、Qiuli Shan、Yuguo Du
DOI:10.1016/j.carres.2015.05.001
日期:2015.8
Thioglycoside-containing trimannose analogs were designed and prepared to mimic the natural N-glycan core trisaccharide alpha-D-Man-(1 -> 3)-[alpha-D-Man-(1 -> 6)]-D-Man. (1 -> 6)-S-Linked trimannoside 1 and its trivalent cluster 2 were synthesized in 11 and 15 steps, respectively, taking advantages of the armed mannopyranosyl trichloroacetimidate as glycosyl donor. Hemagglutination inhibition of the two new thiomannotriose analogs was preliminarily examined. Comparing to the parent trimannoside alpha-D-Man-(1 -> 3)-[alpha-D-Man-(1 -> 6)]-D-Man-OMe, the cluster mannotrioside 2 presented a comparable binding affinity to Con A, while the monomer 6-S-trimannoside 1 exhibited a slightly lower inhibition ability. (C) 2015 Elsevier Ltd. All rights reserved.