81682-53-3Relevant articles and documents
Oxamic acid analogues as LDH-C4-specific competitive inhibitors
Rodriguez-Paez, Lorena,Chena-Taboada, Miguel Angel,Cabrera-Hernandez, Arturo,Cordero-Martinez, Joaquin,Wong, Carlos
experimental part, p. 579 - 586 (2012/06/01)
We performed kinetic studies to determine whether oxamate analogues are selective inhibitors of LDH-C4, owing to their potential usefulness in fertility control and treatment of some cancers. These substances were shown to be competitive inhibitors of LDH isozymes and are able to discriminate among subtle differences that differentiate the active sites of LDH-A4, LDH-B4 and LDH-C4. N-Ethyl oxamate was the most potent inhibitor showing the highest affinity for LDH-C4. However, N-propyl oxamate was the most selective inhibitor showing a high degree of selectivity towards LDH-C4. Non-polar four carbon atoms chains, linear or branched, dramatically diminished the affinity and selectivity towards LDH-C4. N-Propyl oxamate significantly reduced ATP levels, capacitation and mouse sperm motility, in line with results shown by others, suggesting that LDH-C4 plays an essential role in mouse fertility.
Reactions of dehydroascorbic acid with primary aliphatic amines including Nα-acetyllysine
Larisch, Bernd,Pischetsrieder, Monika,Severin, Theodor
, p. 1630 - 1634 (2007/10/03)
The reaction of L-dehydroascorbic acid (DHA) with primary aliphatic amines including Nα-acetyllysine was examined by HPLC. A new aminoreductone, 2-deoxy-2-(propylamino)ascorbic acid (1) was isolated and the structure elucidated by spectroscopic data. Furthermore oxalic acid mono-(2) and diamides (3) were identified as important degradation products of DHA under Maillard conditions. 3-Deoxy-3-(alkylamino)ascorbic acids (4), typical condensation products of L-ascorbic acid and amines, were also detected in the reaction mixtures of DHA. All products are formed under oxidative and nonoxidative conditions from DHA.
Reactivity of Carbamoyl Radicals. A New, General, Convenient Free-Radical Synthesis of Isocyanates from Monoamides of Oxalic Acid
Minisci, Francesco,Fontana, Francesca,Coppa, Fausta,Yan, Yong Ming
, p. 5430 - 5433 (2007/10/02)
A new, general, simple synthesis of isocyanates was developed by oxidation of monoamides of oxalix acid with peroxydisulfate catalyzed by Ag and Cu salts.The reaction was carried out in a two-phase system (water and an organic solvent), and it is suitable also for practical applications, due to the simple experimental conditions and the inexpensive as well as nontoxic reagents.The first example of homolytic intramolecular aromatic carbamoylation is also reported.