Abstract
This chapter discusses the use of gas–liquid chromatography (GLC) for the preparation of methylated sugars. The gas–liquid chromatographic separation of methylated sugars and their derivatives is useful for the investigation of oligosaccharide and polysaccharide structures. The free-reducing methylated sugars themselves are not suitable for GLC analysis primarily because of adsorption on the stationary phase or column support. The derivatives that are usually prepared are the methyl glycosides, which may be directly separated on the gas-chromatographic column or where low mobility of the methyl glycoside results in exceptionally long retention times, analyzed as the acetates or the trimethylsilyl ethers.
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