1195367-79-3

Upstream product

• 4291-69-4 2,3,4,6-Tetra-O-benzyl-D-glucopyranose 
• 1486-47-1 3,4,5-tris(benzyloxy)benzoyl chloride 
• 475161-97-8 benzyl 3,4,5-tris(benzyloxy)benzoate 
• 149-91-7 3,4,5-trihydroxybenzoic acid 
• 1486-48-2 3,4,5-tribenzyloxybenzoic acid 
• 100-39-0 benzyl bromide 

Downstream Products

• 13405-60-2 β-glucogallin 

Relevant academic research and scientific papers

Gallotannins and Tannic Acid: First Chemical Syntheses and in Vitro Inhibitory Activity on Alzheimer's Amyloid β-Peptide Aggregation

The screening of natural products in the search for new lead compounds against Alzheimer's disease has unveiled several plant polyphenols that are capable of inhibiting the formation of toxic β-amyloid fibrils. Gallic acid based gallotannins are among these polyphenols, but their antifibrillogenic activity has thus far been examined using "tannic acid", a commercial mixture of gallotannins and other galloylated glucopyranoses. The first total syntheses of two true gallotannins, a hexagalloylglucopyranose and a decagalloylated compound whose structure is commonly used to depict "tannic acid", are now described. These depsidic gallotannins and simpler galloylated glucose derivatives all inhibit amyloid β-peptide (Aβ) aggregation invitro, and monogalloylated α-glucogallin and a natural β-hexagalloylglucose are shown to be the strongest inhibitors.

NOVEL GLYCOSYLTRANSFERASE, NOVEL GLYCOSYLTRANSFERASE GENE, AND NOVEL GLYCOSYL DONOR COMPOUND

An object of the present invention is to provide a sugar donating reagent comprising a sugar donor compound other than a sugar nucleotide and an enzyme capable of catalyzing a glycosyl transfer reaction using a sugar donor compound other than a sugar nucleotide. The present invention provides the following: a sugar donating reagent containing a compound of formula (A): wherein R 1 is independently selected from hydrogen, or C 1-6 alkyl, C 2-6 alkenyl, and C 2-6 alkynyl in which each of the groups is unsubstituted or substituted with one or more groups selected from OH, F, Cl, Br, I, CN, NO 2 , and SO 2 , n is 0, 1, 2, 3, 4 or 5, m is 0 or 1, and X represents a monosaccharide bound via a 2 bond on its anomeric carbon; a glycosyltransferase capable of catalyzing a glycosyl transfer reaction using the sugar donor; and a glycosyltransferase gene comprising DNA encoding the glycosyltransferase.