DERIVATIVES OF 5-HYDROXY-2 (HYDROXYMETHYL)-4H-PYRAN-4-ON AND METHOD OF THEIR PREPARATION

The invention concerns 5-acyl derivatives of 5-hydroxy-2-(hydroxymethyl)-4H-pyran-4-on of general formula I, where R represents phenyl substituted by the methyl group, nitro group by the chlorine atom, the group of dichloromethyl, tert-butyl, ethoxy, 2,2,2-trichloro-1-formamido-ethyl,(2-hydroxymetyl...

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Bibliographic Details
Main Author VEVERKA MIROSLAV CSC.,CS
Format Patent
LanguageEnglish
Published 12.02.1991
Edition5
Subjects
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Summary:The invention concerns 5-acyl derivatives of 5-hydroxy-2-(hydroxymethyl)-4H-pyran-4-on of general formula I, where R represents phenyl substituted by the methyl group, nitro group by the chlorine atom, the group of dichloromethyl, tert-butyl, ethoxy, 2,2,2-trichloro-1-formamido-ethyl,(2-hydroxymetyl-4-1H-pyran-4-on-5-yl)-oxycarbonyl, R1 represents hydrogen, methyl, n, y is 0 or 1, R' represents the atom of bromine, chlorine, the group azido, hydroxy or the group of general formula NR1R2R3 where R1 to R3 is C1 to C4, the group 2,4,5-tribromimidazol-1-yl, 1-pyridyl and their salts. The substances are prepared by acylation of the compound of general formula II with the reactive derivative of acid of general formula III where R, R1, R', n and y have the abovementioned meanings.
Bibliography:Application Number: CS19890000477