The reaction of some dicarbonyl sugars with aminoguanidine
作者:Jan Hirsch、Eva Petrakova、Milton S. Feather
DOI:10.1016/s0008-6215(00)90999-6
日期:1992.7
The reactions of aminoguanidine (guanylhydrazine) with 3-deoxy-D-erythro-hexos-2-ulose (1a), 3-deoxy-D-glycero-pentose-2-ulose (1b), D-erythro-hexos-2-ulose (1c), and D-glycero-pentose-2-ulose (1d) were examined at 37-degrees at a solution pH of 7.0 (phosphate buffer). For 1a and 1b, two major products were observed and shown respectively to be the 5- and 6-substituted 3-amino-1,2,4-triazine derivatives. The ratios of the products were independent of the amount of aminoguanidine present or the order of mixing the reagents prior to the experiments. For 1c and 1d, only the 5-substituted triazine derivatives were formed, No evidence for hydrazone or bishydrazone formation was observed.
The reaction of 3-deoxy-d-glycero-pentos-2-ulose (“3-deoxyxylosone”) with aminoguanidine
作者:Jan Hirsch、John W. Bayness、James A. Blackledge、Milton S. Feather