SDS of cas: 34213-34-8, Chemical engineers work across a number of sectors, processes differ within each of these areas, are directly involved in the design, development, creation and manufacturing process of chemical products and materials. An article , which mentions 34213-34-8, molecular formula is C14H20O10. The compound – Methyl 2,3,4-Tri-O-acetyl-b-D-glucuronic Acid Methyl Ester played an important role in people’s production and life.
Commercially available D-glucofuranuro-6,3-lactone was transformed into the known, crystalline methyl (5R)-1,2,3,4-tetra-O-acetyl-5-C-bromo-beta-D-glucopyranuronate (3) in three steps.Reduction with tributyltin hydride gave crystalline methyl 1,2,3,4-tetra-O-acetyl-alpha-L-idopyranuronate (4) in ca. 30percent yield, together with the crystalline methyl 1,2,3,4-tetra-O-acetyl-beta-D-glucopyranuronate (1, 63.5percent) which may be separated and converted back by Ferrier’s photobromination into 3.This procedure provides the first practical and expenditious conversion of D-glucuronic into L-iduronic acid by epimerization.Acetate 4 was converted in quantitative yield into methyl (2,3,4-tri-O-acetyl-alpha-L-idopyranosyl bromide)-uronate (22), and then into methyl 3,4-di-O-acetyl-beta-L-idopyranuronate 1,2-(methyl orthoester) (23), which are useful compouns for glycosylation reactions.Various beta-D-glucuronic acid derivatives have been epimerized to alpha-L-iduronic acid analogues by this novel procedure.
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Reference：
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics