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

• Main Author: VEVERKA MIROSLAV CSC.,CS
• Format: Patent
• Language: English
• Published: 12.02.1991
• Edition: 5
• Subjects: CHEMISTRY; HETEROCYCLIC COMPOUNDS; METALLURGY; ORGANIC CHEMISTRY

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...