1139-97-5

Basic information

• Product Name: (3R,4S,5S,6R)-3,4,5-Trimethoxy-6-methoxymethyl-tetrahydro-pyran-2-ol
• CAS NO: 1139-97-5
• Molecular Weight: 236.265
• Mol File: 1139-97-5.mol
• Article Data: 18

Chemical Properties

• CAS DataBase Reference: (3R,4S,5S,6R)-3,4,5-Trimethoxy-6-methoxymethyl-tetrahydro-pyran-2-ol(CAS DataBase Reference)
• NIST Chemistry Reference: (3R,4S,5S,6R)-3,4,5-Trimethoxy-6-methoxymethyl-tetrahydro-pyran-2-ol(1139-97-5)
• EPA Substance Registry System: (3R,4S,5S,6R)-3,4,5-Trimethoxy-6-methoxymethyl-tetrahydro-pyran-2-ol(1139-97-5)

Safety Data

• Hazardous Substances Data: 1139-97-5(Hazardous Substances Data)

Upstream product

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• 482-35-9 quercetin-3-O-glucoside 
• 1633-35-8 1,2,3,4,2',3',4',6'-octa-O-methylgentiobiose 
• 67-56-1 methanol 
• 186581-53-3 diazomethane 
• 474-58-8 Daucosterol 
• 41670-15-9 C₆₆H₁₁₆O₂₄ 
• 90138-33-3 C₅₇H₉₄O₁₈ 

Downstream Products

• 70337-31-4 (2R,3R,4S,5R)-6,6-Bis-benzylsulfanyl-1,3,4,5-tetramethoxy-hexan-2-ol 
• 753490-95-8 2,4-dinitrophenyl 2,3,4,6-tetra-O-methyl-β-D-glucopyranoside 
• 1616345-57-3 1-O-{4-(trans-4-butylcyclohexyl)benzoyl}-2,3,4,6-tetra-O-methyl-β-D-glucopyranose 
• 132618-57-6 (D)-2,3,4,5,6-Penta-O-methyl-1-O-(triphenylmethyl)glucitol 
• 132540-39-7 (D)-2,3,4,6-Tetra-O-methyl-1-O-(triphenylmethyl)glucitol 
• 115514-28-8 β-1,5-anhydro-2,3,4,6-tetra-O-methyl-1-C-phenyl-D-glucitol 
• 115514-29-9 α-1,5-anhydro-2,3,4,6-tetra-O-methyl-1-C-phenyl-D-glucitol 
• 16740-98-0 tri-O-methyl-D-glucal 
• 112684-58-9 [1R-(1α,2β,3α,4β,5α)]-1-methoxyamino-2,3,4-tris(phenylmethoxy)-5-[(phenylmethoxy)methyl]cyclopentane 
• 112924-71-7 [1R-(1α,2β,3α,4β,5β)]-1-methoxyamino-2,3,4-tris(phenylmethoxy)-5-[(phenylmethoxy)methyl]cyclopentane 
• 194208-48-5 C₂₄H₄₃N₂O₇P 

Relevant articles and documents

ANTHRAQUINONES AND FLAVONOIDS OF CASSIA LAEVIGATA ROOTS

Key Word Index -- Cassia laevigata; Leguminosae roots; physcion 8-galactoside; emodin; physcion; ombuin; anthraquinones; flavonoids.

Characterization of a novel polysaccharide with anti-colon cancer activity from Lactobacillus helveticus MB2-1

The present study aimed at investigating the potential anti-colon cancer activity of three purified exopolysaccharides fractions (LHEPS-1, LHEPS-2 and LHEPS-3) from the Lactobacillus helveticus MB2-1. The experimental evidence showed that LHEPS-1 significantly inhibited cell proliferation of human colon cancer Caco-2 cells in both time- and concentration-dependent manners. In contrast, no significant improvements of the inhibitory effects of LHEPS-2 and LHEPS-3 on Caco-2 cells were observed with increasing sample concentrations or prolonged incubation time. Furthermore, the structure of LHEPS-1 was elucidated using methylated analysis, gas chromatography-mass spectroscopy (GC-MS) and nuclear magnetic resonance spectroscopy (NMR), including one- and two-dimensional nuclear magnetic resonance (1D and 2D NMR). Results indicated that the LHEPS-1 consisted of a decasaccharide repeating unit with the following structure (n≈122): Our results suggested that the LHEPS-1 produced by L. helveticus MB2-1 might be suitable for using as natural anti-colon cancer drugs and functional foods ingredients.

Sulfenate intermediates in the sulfoxide glycosylation reaction

The sulfoxide glycosylation reaction works remarkably well for many difficult glycosylations. We attribute this in part to the fact that an extremely reactive intermediate can be generated rapidly under mild conditions at low temperature. We find that ano