Enzymatic properties of α-d-galactosidase from Trichoderma reesei
作者:Andrew N. Savel'ev、Farid M. Ibatyllin、Elena V. Eneyskaya、Anatoly M. Kachurin、Kirill N. Neustroev
DOI:10.1016/s0008-6215(96)00248-0
日期:1996.12
compounds have been obtained. The inhibiting properties of the competitive inhibitors of d -galactose, 1,5-anhydro-d-galactitol, and 2-deoxygalactose have been compared, and reasons for differences in KI values between these compounds have been discussed. It has been shown that α- d -galactosidase exhibits transglycosylating activity; the main product of transglycosylation in the reaction with PNPG is p-nitrophenyl
The reaction of unprotected sugar hydroxylamines and oximes with α-ketoacids leads to the chemoselective formation of glycosyl amides following the decarboxylativecondensation pathway of Bode’s ketoacid hydroxylamine (KAHA) ligation. Sugar oximes with gluco configuration stereoselectively form β-linked products. This method can be used for the convergent synthesis of N-acylated sugars and oligosaccharides
Frush; Isbell, Journal of Research of the National Bureau of Standards (United States), 1951, vol. 47, p. 239,245
作者:Frush、Isbell
DOI:——
日期:——
Traceless Staudinger Ligation of Glycosyl Azides with Triaryl Phosphines: Stereoselective Synthesis of Glycosyl Amides
作者:Aldo Bianchi、Anna Bernardi
DOI:10.1021/jo060409s
日期:2006.6.1
α-Glycosyl amides can be synthesized from the corresponding O-benzyl-α-glycosyl azides using a tracelessStaudingerligation with diphenylphosphanyl-phenyl esters 4. All the phosphines employed and their phenol precursors are stable to air at 4 °C for months. Fast intramolecular trapping of the reduction intermediates results in the direct formation of the amide link, which, in turn, prevents epimerisation