1073-96-7Relevant articles and documents
Isolation and identification of 5-hydroxymaltol, a mutagenic substance in glucose pyrolysate
Kosuge,Tsuji,Nukaya,et al.
, p. 881 - 883 (1983)
This paper describes the isolation and identification of a mutagenic compound produced by the pyrolysis of glucose. The mutagenic activity of 5-hydroxymaltol is too weak to explain the mutagenic activity of the glucose pyrolysate. The authors are now attempting to identify other mutagens besides 5-hydroxymaltol in the glucose pyrolysate.
Identifying new volatile compounds in toasted oak
Cutzach, Isabelle,Chatonnet, Pascal,Henry, Robert,Dubourdieu, Denis
, p. 1663 - 1667 (1999)
Toasting wood to be used in barrels for aging wine produces a great number of volatile and odiferous compounds. Three new volatile odorous compounds in toasted oak were identified. Analysis by high-performance gas chromatography of toasted oak extracts, combined with olfactory detection, enabled various chromatographic peaks with these specific aromas to be isolated. These same odors were simultaneously studied by heating glucose both with and without proline and phenylalanine. Aromatic compounds of interest were identified thanks to a combination of gas chromatography and both mass and infrared spectrometry. An analysis RMN was also used. Hydroxymaltol, 2,5-furanedicarbaldehyde, and furylhydroxymethyl ketone have been detected in extract of toasted oak wood. These molecules may be formed by direct pyrolysis of sugar or Maillard reactions. The acetylformoine was not detected in extract of toasted oak wood, whereas it was detected in heated extracts of various sugars and sugars mixtures with amino acids.
A CONVENIENT SYNTHESIS OF 3-HYDROXY-4H-PYRAN-4-ONE DERIVATIVES HAVING A HALO OR HYDROXY GROUP AT THE 5-POSITION
Takao, Hisashi,Endo, Yoshinori,Horie, Tokunaru
, p. 1803 - 1812 (2007/10/02)
The reaction of 4,5-epoxy-4-halo-6-methoxy-2-methyltetrahydropyran-3-ones (4b, 5b) in acidic media was examined and the following results were found: The reaction of 4b or 5b with 1percent sulfuric acid afforded a mixture of 3,5-dihydroxy-4H-pyran-4-one (