4133-45-3

Basic information

• Product Name: Methyl 2-O,3-O,4-O,6-O-tetrakis(trimethylsilyl)-α-D-galactopyranoside
• Synonyms: Methyl 2-O,3-O,4-O,6-O-tetrakis(trimethylsilyl)-α-D-galactopyranoside
• CAS NO: 4133-45-3
• Molecular Formula: C19H46O6Si4
• Molecular Weight: 482.90694
• Mol File: 4133-45-3.mol
• Article Data: 8

Chemical Properties

• Appearance: /
• CAS DataBase Reference: Methyl 2-O,3-O,4-O,6-O-tetrakis(trimethylsilyl)-α-D-galactopyranoside(CAS DataBase Reference)
• NIST Chemistry Reference: Methyl 2-O,3-O,4-O,6-O-tetrakis(trimethylsilyl)-α-D-galactopyranoside(4133-45-3)
• EPA Substance Registry System: Methyl 2-O,3-O,4-O,6-O-tetrakis(trimethylsilyl)-α-D-galactopyranoside(4133-45-3)

Safety Data

• Hazardous Substances Data: 4133-45-3(Hazardous Substances Data)

Upstream product

• 25561-30-2 trimethylsilyl 2,2,2-trifluoro-N-(trimethylsilyl)acetimidate 
• 3396-99-4 methyl α-D-galactopyranoside 
• 75-77-4 chloro-trimethyl-silane 
• 999-97-3 1,1,1,3,3,3-hexamethyl-disilazane 
• 67-56-1 methanol 
• 168138-24-7 Carbamic acid (2R,3R,4S,5S,6R)-3,5-dihydroxy-2-hydroxymethyl-6-((2R,3S,4S,5S,6S)-2,4,5-trihydroxy-6-hydroxymethyl-tetrahydro-pyran-3-yloxy)-tetrahydro-pyran-4-yl ester 
• 25561-30-2 N,O-Bis(trimethylsilyl)trifluoroacetamide 
• 569329-23-3 Ectyoceramide hexaacetate 
• 18156-74-6 1-(Trimethylsilyl)imidazole 
• 571194-37-1 Ectyoceramide 

Downstream Products

• 3971-48-0 1,5-anhydro-D-galactitol 

Relevant articles and documents

Characterization of ulvan extracts to assess the effect of different steps in the extraction procedure

An effective application development of the polysaccharide ulvan requires a comprehensive knowledge about the influence of the extraction process on composition of the extracts and in ulvan itself. In this context, the two main objectives of the present work are (1) the establishment of an efficient extraction process for ulvan and (2) development of an accurate characterization methodology to evaluate the extract composition and ulvan content. Three ulvan-rich extracts obtained by different schemes of extraction were studied. The methodology for the analysis was improved and a detailed analysis of extracted ulvan was provided. The polysaccharide is rich in ulvanobiuronic acid 3-sulfate type A [→4)-β-d-GlcAp-(1 → 4)-α-l-Rhap 3S-(1→], with minor amounts of ulvanobiuronic acid 3-sulfate type B [→4)-α-l-IdoAp-(1 → 4)-α-l-Rhap 3S-(1→]. The extract with the higher degree of purification is a high molecular weight polysaccharide (790 kDa) composed of rhamnose (22.4%), glucuronic acid (22.5%), xylose (3.7%), iduronic acid (3.1%) and glucose (1.0%). It is highly sulfated (32.2%) and contains 1.3% of proteins and 10.3% of inorganic material. Applying simple extraction scheme it was possible to obtain an extract from green algae with high content of ulvan without affecting the overall chemical structure of the polysaccharide.

Ectyoceramide, the first natural hexofuranosylceramide from the marine sponge Ectyoplasia ferox

Ectyoceramide (1a), a unique monoglycosylceramide with a galactose in the furanose form, was isolated from Ectyoplasia ferox, and its structure was determined by NMR spectroscopy, multiple tandem mass spectrometry, and chemical degradation. Ectyoceramide is the first example of a monohexofuranosylceramide and, more generally, the first natural glycosphingolipid with its first sugar in the furanose form.

Stereoselective synthesis of α-C-D-gluco- and D-galactopyranosyl glycosides from an isoprenoid synthon

Addition of the allylsilane Me3SiCH2C:CH2CH2CO2Me to D-gluco and D- galactopyranosyl derivatives gives in good yields α-C-glycopyranosides which are easily converted into glycosylated β-keto esters, butenolide and dihydropyrone.