3254-15-7

Basic information

• Product Name: 3,4,6-tri-O-acetyl-1,2-O-(1-ethoxyethylidene)-α-D-galactopyranose
• Synonyms: 3,4,6-tri-O-acetyl-1,2-O-(1-ethoxyethylidene)-α-D-galactopyranose
• CAS NO: 3254-15-7
• Molecular Weight: 376.361
• Mol File: 3254-15-7.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 3,4,6-tri-O-acetyl-1,2-O-(1-ethoxyethylidene)-α-D-galactopyranose(CAS DataBase Reference)
• NIST Chemistry Reference: 3,4,6-tri-O-acetyl-1,2-O-(1-ethoxyethylidene)-α-D-galactopyranose(3254-15-7)
• EPA Substance Registry System: 3,4,6-tri-O-acetyl-1,2-O-(1-ethoxyethylidene)-α-D-galactopyranose(3254-15-7)

Safety Data

• Hazardous Substances Data: 3254-15-7(Hazardous Substances Data)

Upstream product

• 64-17-5 ethanol 
• 3068-32-4 1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside 

Downstream Products

• 66492-24-8 3,4,6-tri-O-benzyl-1,2-O-(1-ethoxyethylidene)-α-D-galactopyranose 
• 81086-90-0 methyl 3,4,6-tri-O-benzyl-α-D-galactopyranoside 
• 73445-27-9 methyl 3,4,6-tri-O-benzyl-β-D-galactopyranoside 
• 129948-14-7 Acetic acid (2S,3R,4S,5S,6R)-4,5-diacetoxy-6-acetoxymethyl-2-((2R,3R,4S,5S,6R)-4,5-bis-benzyloxy-6-benzyloxymethyl-2-methoxy-tetrahydro-pyran-3-yloxy)-tetrahydro-pyran-3-yl ester 
• 107937-20-2 (2S,3R,4S,5R,6R)-2-((2R,3R,4S,5S,6R)-4,5-Bis-benzyloxy-6-benzyloxymethyl-2-methoxy-tetrahydro-pyran-3-yloxy)-6-hydroxymethyl-tetrahydro-pyran-3,4,5-triol 
• 188398-90-5 O-(2-O-acetyl-3,4,6-tri-O-benzyl-β-D-galactopyranosyl)-(1<*>4)-3,6-di-O-benzyl-2-deoxy-2-phthalimido-α-D-glucopyranosyl fluoride 
• 188398-89-2 1-4)-3,6-di-O-benzyl-2-deoxy-2-phthalimido-β-D-glucopyranosyl)>-4,5-di-tert-butyloxycarbonyl-1,2,3-triazole 
• 188398-88-1 O-(2-O-acetyl-3,4,6-tri-O-benzyl-β-D-galactopyranosyl)-(1<*>4)-3,6-di-O-benzyl-2-deoxy-2-phthalimido-β-D-glucopyranosyl azide 
• 112289-36-8 2-O-acetyl-3,4,6-tri-O-benzyl-α-D-galactopyranosyl fluoride 
• 77790-46-6 1,2-di-O-acetyl-3,4,6-tri-O-benzyl-β-D-galactopyranose 
• 77790-45-5 1,2-di-O-acetyl-3,4,6-tri-O-benzyl-α-D-galactopyranose 
• 93495-88-6 2-O-acetyl-3,4,6-tri-O-benzyl-α-D-galactopyranose 

Relevant articles and documents

PREPARATION OF α AND Β ANOMERS OF VARIOUS ISOMERIC METHYL O-D-GALACTOPYRANOSYL-D-GALACTOPYRANOSIDES. STANDARDS FOR INTERPRETATION OF 13C-N.M.R. SPECTRA OF D-GALACTOPYRANANS

The four isomer of methyl O-β-D-galactopyranosyl-β-D-galactopyranoside were prepared by condensation of 2,3,4,6-tetra-O-acetyl-α-galactopyranosyl bromide with appropriate, partially O-substitued derivatives of methyl β-D-galactopyranoside.Reaction of 3,4,6-tri-O-acetyl-1,2-O-(1-ethoxyethylidene)-α-D-galactopyranose with the same acceptors, in the presence of mercuric bromide, led to the formation of α and β linkages.Thus, it was possible to assign 13C-n.m.r. resonances of α and β anomers of methyl O-D-galactopyranosyl-β-D-galactopyranosides.In terms of application of these shift values and those of related D-galactobioses to the structual analysis of D-galactopyranans by shift comparisons, some generalizations can be made.For β-D-galactopyranans, the resonances glycosyloxylated carbon atoms of methyl O-β-D-galactopyranosyl-β-D-galactopyranosides are sensitive to structure and appear to have typical values, whereas limited variation was observed with shift of C-1' signals.On the other hand, for assigning structures to D-galactopyranans containing α linkages, the C-1' shifts (at higher field) of methyl O-α-D-galactopyranosyl-β-D-galactopyranosidesc are sensitive to linkage position, whereas those of glycosyloxylated carbon atoms vary only a little.