5627-25-8

Basic information

• Product Name: 4-O-β-L-Galactopyranosyl-3,6-anhydro-L-galactose
• Synonyms: 4-O-β-L-Galactopyranosyl-3,6-anhydro-L-galactose;Agarobiose;3,6-Anhydro-4-O-beta-D-galactopyranosyl-L-galactose
• CAS NO: 5627-25-8
• Molecular Formula: C12H20O10
• Molecular Weight: 324.2812
• Mol File: 5627-25-8.mol
• Article Data: 3

Chemical Properties

• Boiling Point: 636.9±55.0 °C(Predicted)
• Appearance: /
• Density: 1.65±0.1 g/cm3(Predicted)
• PKA: 12.61±0.20(Predicted)
• CAS DataBase Reference: 4-O-β-L-Galactopyranosyl-3,6-anhydro-L-galactose(CAS DataBase Reference)
• NIST Chemistry Reference: 4-O-β-L-Galactopyranosyl-3,6-anhydro-L-galactose(5627-25-8)
• EPA Substance Registry System: 4-O-β-L-Galactopyranosyl-3,6-anhydro-L-galactose(5627-25-8)

Safety Data

• Hazardous Substances Data: 5627-25-8(Hazardous Substances Data)

Upstream product

• 109454-75-3 β-D-galactopyranosyl-(1->4)-3,6-anhydro-L-galactose diethyl dithioacetal 

Downstream Products

• 20379-41-3 Agarobiose-dimethylacetal 
• 155015-96-6 agarotriose 

Relevant articles and documents

-

-

-

-

Synthesis of peracetylated C-1-deoxyalditol- and C-glycoside-dipyrranes via dithioacetal derivatives

Dipyrranes bearing peracetylated mono- or disaccharidic C-1-deoxyalditol moieties were prepared from d-galactose, d-glucose, d-mannose, and lactose. A partially hydrolyzed polysaccharide (agarose) was also used as starting material for the synthesis of a disaccharide-containing C-glycoside dipyrrane. These compounds were synthesized as follows: the sugar starting materials were first submitted to a mercaptolysis-acetylation one-pot procedure (EtSH/HCl-Ac 2O/pyridine). The resulting peracetylated diethyl dithioacetals were converted into dipyrranes through carbonyl deprotection (H5IO 6, THF-Et2O) followed by TFA-catalyzed pyrrole condensation with yields up to 62%. Overall yields from sugar starting materials were up to 49%.