Let’s face it, organic chemistry can seem difficult to learn. Especially from a beginner’s point of view. 499-40-1, Name is (2R,3S,4R,5R)-2,3,4,5-Tetrahydroxy-6-(((2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)hexanal, molecular formula is C12H22O11. In a Article，once mentioned of 499-40-1, Application In Synthesis of (2R,3S,4R,5R)-2,3,4,5-Tetrahydroxy-6-(((2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)hexanal
Methods are described for the preparation of secondary heterocyclic amines containing a pyridine nitrogen atom in the alpha position relative to the amino group.Compounds of this class were prepared: a) from alpha-hetaryl halides and alpha-hetarylamines in presence of barium oxide ( the process is accompanied by intramolecular cyclization, leading to the formation of condensed imidazoles); b) by the cyclization of heterylthioureas with a bromo acetal; c) by the reactions of 2-(methylthio)benz
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Reference：
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics