130259-50-6Relevant academic research and scientific papers
Stereoselective Synthesis of 2-Amino-2-deoxy-β-D-glucopyranosides and Galactopyranosides by Using a Catalytic Amount of Tin(II) Trifluoromethanesulfonate
Mukaiyama, Teruaki,Matsubara, Koki
, p. 1755 - 1758 (1992)
In the presence of catalytic amounts of tin(II) trifluoromethanesulfonate, various 2-amino-2-deoxy-β-D-glucopyranosides or galactopyranosides are stereoselectively synthesized in good yields from 1,3,4,6-tetra-O-acetyl-2-deoxy-2-(2,2,2-trichloroethoxycarb
Catalytic Stereoselective Synthesis of 2-Amino-2-Deoxy-α-D-Glucopyranosides and Galactopyranosides
Matsubara, Koki,Mukaiyama, Teruaki
, p. 2145 - 2148 (1993)
In the presence of a catalyst generated from SnCl4 and a silver salt, various 2-amino-2-deoxy-α-D-glucopyranosides or galactopyranosides are stereoselectively sythesized in good yields with high stereoselectivities through anomerization step starting from
Chemical synthesis of 4-azido-β-galactosamine derivatives for inhibitors of N-acetylgalactosamine 4-sulfate 6-O-sulfotransferase
Hor, Seanghai,Kodama, Takumi,Sugiura, Nobuo,Kondou, Hikaru,Yanagida, Mio,Yanagisawa, Keiya,Shibasawa, Aoki,Tsuzuki, Bunta,Fukatsu, Naoto,Nagao, Kazuya,Yamana, Kenji,Hidari, Kazuya I. P. J.,Watanabe, Hideto,Habuchi, Osami,Nakano, Hirofumi
, p. 477 - 491 (2018/09/20)
Chondroitin sulfate E (CS-E) plays a crucial role in diverse processes ranging from viral infection to neuroregeneration. Its regiospecific sulfation pattern, generated by N-acetylgalactosamine 4-sulfate 6-O-sulfotransferase (GalNAc4S-6ST), is the main structural determinant of its biological activity. Inhibitors of GalNAc4S-6ST can serve as powerful tools for understanding physiological functions of CS-E and its potential therapeutic leads for human diseases. A family of new 4-acylamino-β-GalNAc derivatives and 4-azido-β-GalNAc derivatives were synthesized for their potential application as inhibitors of GalNAc4S-6ST. The target compounds were evaluated for their inhibitory activities against GalNAc4S-6ST. The results revealed that 4-pivaloylamino- and 4-azido-β-GalNAc derivatives displayed evident activities against GalNAc4S-6ST with IC50 value ranging from 0.800 to 0.828?mM. They showed higher activities than benzyl D-GalNAc4S that was used as control.
Glucosamine derived DISAL donors for stereoselective glycosylations under neutral conditions
Grathe, Susanne,Thygesen, Mikkel B.,Larsen, Kim,Petersen, Lars,Jensen, Knud J.
, p. 1439 - 1448 (2007/10/03)
DISAL (methyl 3,5-dinitrosalicylate) D-glucosyl, D-galactosyl, D-mannosyl, and L-quinovosyl donors have previously provided the efficient glycosylation of a range of substrates under either strictly neutral, mildly basic, or very mildly Lewis acidic (LiClO4) conditions. Herein we report the synthesis of new glucosamine DISAL donors, carrying N-TCP, -Troc, or -TFAc protecting groups, and their use in β-(1,2-trans) selective glycosylations, primarily in NMP in the absence of any added Lewis acids, or in CH 3NO2 with LiClO4. Finally, precise microwave heating proved effective in promoting the difficult glycosylation of the 3-OH of a glucosamine derivative.
An Efficient Method for the Stereoselective Synthesis of 2-Amino-β-D- and α-D-Glycosides from Peracylated Sugars Using Active Acidic Species
Matsubara, K.,Mukaiyama, T.
, p. 2365 - 2382 (2007/10/02)
In the presence of a catalytic amount of tin(II) trifluoromethanesulfonate or ytterbium(II) trifluoromethanesulfonate, various 2-amino-β-D-glucopyranosides or galactopyranosides are stereoselectively synthesized in high yields from 1,3,4,6-tetra-O-acetyl-
The use of N-alkoxycarbonyl derivatives of 2-amino-2-deoxy-D-glucose as donors in glycosylation reactions
Boullanger, Paul,Jouineau, Martine,Bouammali, Boufelja,Lafont, Dominique,Descotes, Gerard
, p. 151 - 164 (2007/10/02)
1,3,4,6-Tetra-O-acetyl-2-alkoxycarbonylamino-2-deoxy-β-D-glucopyranoses and 3,4,6-tri-O-acetyl-2-alkoxycarbonylamino-2-deoxy-α-D-glucopyranosyl bromides have been used as donors in glycosylation reactions with model alcohols. β-Glycosides were obtained in good yields and with a high degree of 1,2-trans stereoselectivity.An oxazolidone was formed as the main product from the reaction of some of the glucopyranosylbromides with alcohols of low reactivity, but the formation of all products could be interpreted by a strong participation of the alkoxycarbonylamino group.
