374906-11-3

Basic information

• Product Name: 5-O-benzyl-1,2:3,4-di-O-isopropylidene-α-D-galactoseptanose
• CAS NO: 374906-11-3
• Molecular Weight: 350.412
• Mol File: 374906-11-3.mol

Chemical Properties

• CAS DataBase Reference: 5-O-benzyl-1,2:3,4-di-O-isopropylidene-α-D-galactoseptanose(CAS DataBase Reference)
• NIST Chemistry Reference: 5-O-benzyl-1,2:3,4-di-O-isopropylidene-α-D-galactoseptanose(374906-11-3)
• EPA Substance Registry System: 5-O-benzyl-1,2:3,4-di-O-isopropylidene-α-D-galactoseptanose(374906-11-3)

Safety Data

• Hazardous Substances Data: 374906-11-3(Hazardous Substances Data)

Upstream product

• 77-76-9 2,2-dimethoxy-propane 
• 374905-81-4 5-O-benzyl-1,2-O-isopropylidene-α-D-galactoseptanose 

Relevant articles and documents

Preparation of 1,2-O-isopropylidene derivatives of α-D-galactoseptanose, β-L-altroseptanose, and 3-O-methyl-α-D-guloseptanose

Displacement of the tosyloxy group in 5-O-benzyl-1,2-O-isopropylidene-4-O-(p-toluenesulfonyl)-α-D- glucoseptanose has yielded derivatives of 1,2-O-isopropylidene-α-D-galactoseptanose. Acid catalysed acetonation then gave 1,2:3,4-di-O-isopropylidene-α-D-galactoseptanose or 1,2;4,5-di-O-isopropylidene-α-D-galactoseptanose using lower acid concentrations. Reduction of the ketone derived from 1,2:3,4-O-isopropylidene-α-D-septanose gave 1,2;3,4-di-O-isopropylidene-β-L-altroseptanose. Reaction of 3,4-anhydro-5-O-benzyl-1,2-O-isopropylidene-α-D-galactoseptanose with sodium methoxide gave 5-O-benzyl-1,2-O-isopropylidene-4-O-methyl-α-D-glucoseptanose and 5-O-benzyl-1,2-O-isopropylidene-3-O-methyl-α-D-guloseptanose. Solution-state conformations of these compounds have been deduced from their 1H NMR spectra.