Mannans hydrolysis products from methylated

This sugar was isolated as its monohydrate from the hydrolysis products of methylated yeast mannan and its structure proved by Haworth, Heath and Peat.23 Methylation of the methyl glycoside gave the crystalline methyl 2,3,4,6-tetramethyl-a-D-mannopyranoside, indicating a pyranose structure. It seemed likely that the compound was the monohydrate of 2,4,6-trimethyl-D-mannose, as the 2,3,4- and 2,3,6-isomers were known as sirups that did not form hydrates, and the crystalline... 

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