92949-53-6Relevant academic research and scientific papers
Chemical Synthesis of a Biosynthetic Precursor of Lipid A with a Phosphorylated Tetraacyl Disaccharide Structure
Imoto, Masahiro,Yoshimura, Hiroyuki,Yamamoto, Michiharu,Shimamoto, Tetsuo,Kusumoto, Shoichi,Shiba, Tetsuo
, p. 2197 - 2204 (2007/10/02)
2,2'-N:3,3'-O-Tetrakis-β(1-6)-D-glucosamine disaccharide 1,4'-bis(phosphate) and its dephospho derivatives were synthesized.The bisphosphate prepared was shown to be identical with a natural biosynthetic precursor of lipid A which corresponds to the lipophilic part of lipopolysaccharide (LPS) in bacterial cell wall.The synthetic bis- and monophosphates exhibited many of typical endotoxic activities of LPS.Consequently, this work established the chemical structure of the biosynthetic precursor of lipid A and elucidated the fundamental structure required for the expression of these activities.
Total Synthesis of Escherichia coli Lipid A, the Endotoxically Active Principle of Cell-Surface Lipopolysaccharide
Imoto, Masahiro,Yoshimura, Hiroyuki,Shimamoto, Tetsuo,Sakaguchi, Nobuki,Kusumoto, Shoichi,Shiba, Tetsuo
, p. 2205 - 2214 (2007/10/02)
Chemical synthesis are described of polyacylated β(1->6) glucosamine disaccharide 1,4'-bis(phosphate), which corresponds to the proposed structure of E. coli lipid A, and of its dephospho derivatives.The synthetic bisphosphate proved to be identical with
Chemical synthesis of 1-dephospho derivative of escherichia coli lipid A
Kusumoto,Yoshimura,Imoto,Shimamoto,Shiba
, p. 909 - 912 (2007/10/02)
1-Dephospho E. coli lipid A (3) was synthesized and shown to be identical with the corresponding derivative isolated from bacterial cells. This provides the unequivocal evidence supporting the structure of E. coli lipid A (2) recently proposed by us.
CHEMICAL SYNTHESIS OF PHOSPHORYLATED TETRAACYL DISACCHARIDE CORRESPONDING TO A BIOSYNTHETIC PRECURSOR OF LIPID A
Imoto, M.,Yoshimura, H.,Yamamoto, M.,Shimamoto, T.,Kusumoto, S.,Shiba, T.
, p. 2667 - 2670 (2007/10/02)
A total synthesis of 2,2'-N; 3,3'-O-tetraquis-β(1-6)-D-glucosamine disaccharide 1,4'-diphosphate is described.This is the first confirmation of the fundamental structure of lipid A since the synthetic compound exhibited most of the characteristic biological activities of natural endotoxin.
