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Sulfonate protecting groups. Improved synthesis of scyllo-inositol and its orthoformate from myo-inositol. 2003

Manash P Sarmah, and Mysore S Shashidhar
National Chemical Laboratory, Division of Organic Synthesis, Pune 411 008, India.

A convenient high yielding method for the preparation of scyllo-inositol and its orthoformate from myo-inositol, without involving chromatography is described. myo-Inositol 1,3,5-orthoformate was benzoylated to obtain 2-O-benzoyl-myo-inositol 1,3,5-orthoformate. This diol was tosylated and the benzoyl group removed by aminolysis in a one-pot procedure to obtain 4,6-di-O-tosyl-myo-inositol 1,3,5-orthoformate. Swern oxidation of the ditosylate, followed by sodium borohydride reduction and methanolysis of tosylates gave scyllo-inositol 1,3,5-orthoformate (isolated as the triacetate). Aminolysis of the acetates followed by acid hydrolysis of the orthoformate moiety with trifluoroacetic acid gave scyllo-inositol in an overall yield of 64%.

UI MeSH Term Description Entries
D007294 Inositol An isomer of glucose that has traditionally been considered to be a B vitamin although it has an uncertain status as a vitamin and a deficiency syndrome has not been identified in man. (From Martindale, The Extra Pharmacopoeia, 30th ed, p1379) Inositol phospholipids are important in signal transduction. Myoinositol,Chiro-Inositol,Mesoinositol,Chiro Inositol
D013451 Sulfonic Acids Inorganic or organic oxy acids of sulfur which contain the RSO2(OH) radical. Sulfonic Acid,Acid, Sulfonic,Acids, Sulfonic
D015394 Molecular Structure The location of the atoms, groups or ions relative to one another in a molecule, as well as the number, type and location of covalent bonds. Structure, Molecular,Molecular Structures,Structures, Molecular

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