2871-14-9Relevant academic research and scientific papers
Quantitative analysis of selective glycosylation of saccharides with aromatic amines
Hanai, Toshihiko,Shimada, Keiko,Koyama, Nobuhiro,Nohara, Yukio
supporting information, (2020/10/13)
Glycosylation, a part of the Maillard reaction, occurs non-enzymatically in food and biological processes. The selectivity of N-glycosylation was analyzed based on the reactivity of monosaccharides with aromatic amines, including aromatic amino acids, and the degree of molecular interaction (MI) measured using liquid chromatography. Furthermore, the chemical structures of reaction products were determined using X-ray crystallography and/or NMR. The possible reaction products were estimated in silico using the optimized energy values of different conformations. The MI energy values of amino groups and saccharides were calculated using in silico analysis using a model phase. Saccharides having larger MI values easily produced stable crystals of N-glycosides. The reaction rate of glucose (an energy saccharide) was slow, and it easily produced the Amadori compounds. The study of the reactivity of aromatic amines with saccharides, the measurement of the retention of monosaccharides on amino phase in chromatography, and the synthesis of N-glycosides for the determination of their structures will provide useful information about selective glycosylation for the modification of drug candidates to improve their water solubility.
Synthesis and antiproliferative activity of selenoindirubins and selenoindirubin-N-glycosides
Erben, Friedrich,Kleeblatt, Dennis,Sonneck, Marcel,Hein, Martin,Feist, Holger,Fahrenwaldt, Thomas,Fischer, Christine,Matin, Abdul,Iqbal, Jamshed,Pl?tz, Michael,Eberle, Jürgen,Langer, Peter
, p. 3963 - 3978 (2013/07/11)
Selenoindirubins and selenoindirubin-N-glycosides were prepared by the reaction of isatins and isatin-N-glycosides with 3-acetoxy-benzo[b]selenophene, respectively. While selenoindirubin-N-glycosides have not been reported before, three non-glycosylated s
Synthesis and characterization of N-tolyglycosylamines
Kublashvili,Labartkava,Giorgadze,Ugrekhelidze
experimental part, p. 413 - 415 (2009/04/04)
N-Tolylglycosylamines were synthesized from o-, m-, and p-toluidines and aldoses (D-glucose, D-galactose, D-mannose, L-rhamnose, D-xylose, and L-arabinose). The anomeric and isomeric compositions of the synthesized products were established using 13
Molecular and crystal structures of N-aryl-β-D-glycopyranosylamines from mannose and galactose
Ojala, Charles R,Ostman, Joanne M,Hanson, Summer E,Ojala, William H
, p. 415 - 427 (2007/10/03)
The molecular and crystal structures of 12 N-aryl-β-D-glycopyranosylamines have been determined by X-ray crystallography. Six of these are mannose derivatives, the N-p-bromophenyl (1), N-p-tolyl (2), N-m-chlorophenyl (3), N-p-methoxyphenyl (4), N-o-chlorophenyl (5), and N-o-tolyl (6) derivatives that are formed by reaction with the corresponding substituted anilines. The remaining six are galactose derivatives, the N-phenyl (7), N-p-chlorophenyl (8), N-p-bromophenyl (9), N-p-iodophenyl (10), N-p-nitrophenyl (11) and N-p-tolyl (12), derivatives prepared similarly. Compounds 1-3 assume the same packing arrangement. Compounds 4, 5, and 6 assume unique packing arrangements, although that assumed by 4 is closely related to that assumed by 1-3. Compounds 7-11 assume the same packing arrangement; that assumed by 12 is closely related to that assumed by 7-11. That the same packing arrangements can be maintained in spite of substantial changes in the electronic and steric nature of the substituent on the aryl ring reflects the strength of the hydrogen bond network connecting the monosaccharide portions of the molecules in the solid state. A hydrogen bonding motif found in all six mannose structures is a mutual interaction between translationally related molecules involving O-3-H···O-5 and O-6-H···O-4 hydrogen bonds. The recurrence of this motif throughout this group of mannosylamines suggests that it is an especially favorable interaction that might be expected to occur also in related macromolecular systems.
