211567-22-5Relevant academic research and scientific papers
Effect of Aglycon Structure on Saccharide Elongation by Cells
Kimura, Tamami,Kasuya, Maria Carmelita Z.,Hatanaka, Kenichi,Matsuoka, Koji
, p. 239 - 247 (2015/10/19)
Alkyl N-acetyl-β-D-glucosaminide (GlcNAc primers) with different aglycon moieties were synthesized and used to determine the effect of the aglycon structure on cellular saccharide elongation. Dodecyl N-acetyl-β-D-glucosaminide (GlcNAc-C12), tridecan-7-yl N-acetyl-β-D-glucosaminide (GlcNAc-2C6), and pentacosan-13-yl N-acetyl-β-D-glucosaminide (GlcNAc-2C12) primers were synthesized by glycosylation of dodecan-1-ol, tridecan-7-ol, and pentacosan-13-ol, respectively, with peracetylglucosamine. These primers were introduced to mouse B16 melanoma cells to prepare glycolipids. After 48 h incubation, results showed that GlcNAc-C12 was elongated to give NeuAc-Gal-GlcNAc-C12. GlcNAc-2C6 was also elongated to afford Gal-GlcNAc-2C6 and NeuAc-Gal-GlcNAc-2C6. On the other hand, GlcNAc-2C12 primer was not elongated. Significantly, the results demonstrated that the amount of glycosylated product increased 1.5-times by modifying the aglycon structure of GlcNAc from C12 to 2 C6 despite having almost the same number of C-units.
H2so4-silica promoted direct formation of β-glycosides of N-Acetyl glycosylamines under microwave conditions
Mandai, Santanu,Sharma, Nayan,Mukhopadhyay, Balaram
experimental part, p. 3111 - 3114 (2010/03/03)
N-Acetyl glycosamines are important building blocks for the synthesis of biologically active oligosaccharides. This communication describes a simple direct protocol for the synthesis of βglycosides of N-acetyl glycosylamines from easily accessible perO-ac
Glycosylation of dodecyl 2-acetamido-2-deoxy-β-d-glucopyranoside and dodecyl β-d-galactopyranosyl-(1→4)-2-acetamido-2-deoxy-β-d-glucopyranoside as saccharide primers in cells
Sato, Toshinori,Takashiba, Minako,Hayashi, Rumi,Zhu, Xingyu,Yamagata, Tatsuya
, p. 831 - 838 (2008/09/16)
Syntheses of oligosaccharides expressed on cells are indispensable for the improvement of the functional analyses of the oligosaccharides and their applications. We are developing saccharide primers for synthesizing oligosaccharides using living cells. In this study, dodecyl 2-acetamido-2-deoxy-β-d-glucopyranoside (GlcNAc-C12) and dodecyl β-d-galactopyranosyl-(1→4)-2-acetamido-2-deoxy-β-d-glucopyranoside (LacNAc-C12) were examined for their abilities to prime the syntheses of neolacto-series oligosaccharides in HL60 cells. When GlcNAc-C12 was incubated with HL60 cells in serum-free medium for 2 days, 14 kinds of glycosylated products were collected from the culture medium. They were separated by high-performance liquid chromatography. The sequences of the products were determined to be neolacto-series oligosaccharides including LewisX, sialyl LewisX, polylactosamine, and sialylpolylactosamine by mass spectrometry. GlcNAc-C12 was also glycosylated by B16 cells and gave sialyllactosamine. Furthermore, LacNAc-C12 gave similar glycosylated products to GlcNAc-C12.
Synthesis and protective anti-infective action of anomeric lipophilic glycosides of N-acetylmuramyl-L-alanyl-D-isoglutamine
Zemlyakov,Tsikalova,Tsikalov,Chirva,Mulik,Kalyuzhin
, p. 382 - 388 (2008/02/10)
Anomeric pairs of α-and β-dodecyl, α-and β-(1-pentylhexyl), and α-and β-cyclododecyl glycosides of N-acetylmuramyl-L-alanyl-D-isoglutamine (MDP) were synthesized. The starting β-D-glucosaminides were obtained by the oxazoline method, and the corresponding α-isomers, by the mercuric iodide-catalyzed glycosylation of alcohols with α-glucosaminyl chloride peracetate in nitromethane at ~90°C. No reliable differences between the stimulation of mouse resistance to the infection with Staphylococcus aureus (doses of 2, 20, and 200 μg/mouse) and Escherichia coli (doses of 0.05, 1, and 20 μg/mouse) with the MDP α-and β-glycosides were found. Pleiades Publishing, Inc., 2006.
Alkylating agents from sugars. Cyclophosphamides derived from 2-amino- 2-deoxy-D-allose
Iglesias-Guerra, Fernando,Romero, Isidora,Alcudia, Felipe,Vega-Perez, Jose M.
, p. 57 - 62 (2007/10/03)
Cyclophosphamides derived from alkyl 2-amino-4,6-O-benzylidene-2-deoxy- β-D-allopyranosides have been synthesized with good yield by treatment of the corresponding 2-amino-2-deoxy-D-allose derivatives with bis(2- chloroethyl)phosphoramide dichloride. The ring-forming reaction took place with very high diastereoselectivity. Subsequent hydrogenolysis gave excellent yields of cyclophosphamides derived from alkyl 2-amino-2-deoxy-β-D- allopyranosides, with hydrophilicity greater than that of the precursors. The starting material was easily available from 2-acetamido-2-deoxy-D-glucose.
