作者:Mariusz Mojzych、Andrzej Rykowski
DOI:10.3987/com-07-11142
日期:——
Starting from 3-methyl-5-methylsulfanyl-1H-pyrazolo[4,3-e][1,2,4]triazine (1) by reaction with methyl iodide, subsequent oxidation, ipso-substitution with hydrazine and reaction with yellow mercury (H) oxide 1,3-dimethyl-1H-pyrazolo[4,3-e][1,2,4]triazine (14) is prepared. Further radical bromination and treatment with ethylene glycol in the presence of potassium carbonate afforded 3-(2-hydroxy-ethoxymethyl)-1-methyl-1H-pyrazolo[4,3-e][1,2,4]triazine (16) as aza-analog of N-methylated acycloformycin A.