115493-89-5Relevant academic research and scientific papers
POLYSACCHARIDE AND METHODS
-
Page/Page column 72, (2018/05/24)
There is provided a molecule comprising a chain of seven or more contiguous units of 4,6-dideoxy-4-acylamido-α-pyranose, each pair of units joined by a C1-C2 or a C1-C3 link, the chain having a terminal end and a reducing end, wherein the pyranose ring in the unit of the chain most distal from the reducing end is linked to a cap structure. The cap structure is not a 4,6-dideoxy-4-acylamido-α-pyranose. There are also provided vaccine compositions comprising the molecule and methods of vaccinating an animal against infection by a Brucella organism, including methods of distinguishing between a vaccinated and an infected animal. There are further provided novel methods of detecting the presence in a sample of an anti-Brucella antibody.
SYNTHESIS OF THE METHYL α-GLYCOSIDE OF THE INTRACATENARY DISACCHARIDE REPEATING UNIT OF THE O-POLYSACCHARIDE OF VIBRIO CHOLERAE O:1. A COMPARISON OF TWO ASSEMBLY STRATEGIES
Gotoh, Makoto,Kovac, Pavol
, p. 1193 - 1214 (2007/10/02)
The two strategies engaged in the construction of the title disaccharide 17 comprise: 1. assembly of a diamino disaccharide and its N-acylation using chiral reagents to introduce the 4-(3-deoxy-L-glycero-tetronyl) group, followed by deprotection, and 2. preparation of a glycosyl acceptor and a glycosyl donor both having the chiral 3-deoxy-L-glycero-tetronamido group already in place, their condensation to give a fully substituted disaccharide, and deprotection.Accordingly, the crystalline diamino disaccharide methyl 2-O-(4-amino-3-O-benzyl-4,6-dideoxy-α-D-mannopyranosyl)-4-amino-3-O-benzyl-4,6-dideoxy-α-D-mannopyranoside, (14), was prepared from the known diazido disaccharide 12, and treated with the lactone 30, or its acetylated or benzylated analogs 31 and 32, respectively, as the N-acylating reagents.Subsequent deprotection of the respective products applying standard chemistry gave 17.Alternatively, the methyl α-glycoside of the monomeric intracatenary repeating unit of Vibrio cholerae O:1 (2) was converted to the fully benzoylated glycosyl chloride 26, and the latter glycosyl donor was condensed with methyl 3-O-benzyl-4,6-dideoxy-4-(2,4-di-O-benzoyl-3-deoxy-L-glycero-tetronamido)-α-D-mannopyranoside (24), to give the corresponding, fully protected derivative 27.Deprotection then readily gave 17.It appears that the title disaccharide can be most efficiently synthesized using synthons 24 and 26.The lactones 30 and 32 appear to be promising acylating reagents for the introduction of the 3-deoxy-L-glycero-tetronamido group when higher oligosaccharides in this series will be synthesized via their (poly)amino precursors.
SYNTHESIS OF ANTIGENIC DETERMINANTS OF THE Brucella A ANTIGEN, UTILIZING METHYL 4-AZIDO-4,6-DIDEOXY-α-D-MANNOPYRANOSIDE EFFICIENTLY DERIVED FROM D-MANNOSE
Bundle, David R.,Gerken, Manfred,Peters, Thomas
, p. 239 - 252 (2007/10/02)
A strategy for the synthesis of Brucella O-antigenic determinants containing 2-linked 4,6-dideoxy-4-formamido-α-D-mannopyranosyl residues is described.The approach adopted also permits the N-acyl moiety to be varied.A high-yield synthesis of methyl 4-azid
SYNTHESIS OF IMMUNOLOGICALLY ACTIVE OLIGOSACCHARIDE DETERMINANTS OF THE BRUCELLA A ANTIGEN: UTILIZATION OF INTERMEDIATES DERIVED FROM METHYL 4-AZIDO-4,6-DIDEOXY-α-D-MANNOPYRANOSIDE
Gerken, Manfred,Bundle, David
, p. 5067 - 5070 (2007/10/02)
A facile, high yield synthesis of methyl 4-azido-4,6-dideoxy-D-mannopyranoside is described in conjunction with an integrated strategy for the synthesis of its 1,2-linked oligosaccharides, which are antigenic determinants of the abrucella A antigen.
