Synthesis of 3-(Alditol-1-yl)triazolo[4′,3′:2,3]-1,2,4-triazino[5,6-<i>b</i>]indoles
作者:Ahmed Mousaad、Hamida Abdel Hamid、Ahmed El Nemr、El Sayed H. El Ashry
DOI:10.1246/bcsj.65.546
日期:1992.2
A series of the hydrazones were prepared by the reaction of 3-hydrazino-5H-1,2,4-triazino[5,6-b]indole (1) with monosaccharides, and their acetylation was studied. Cyclodehydrogenation of the hydrazones gave 3-(substituted)-10H-1,2,4-triazolo[4′,3′:2,3][1,2,4]triazino[5,6-b]indole, whose acetylation and partial acetylation were carried out. The ring-chain tautomerism of the hydrazones promoted their
3-肼基-5H-1,2,4-三嗪基[5,6-b]吲哚(1)与单糖反应制备了一系列腙,并对其乙酰化进行了研究。腙环脱氢得到 3-(取代)-10H-1,2,4-三唑并[4',3':2,3][1,2,4]三嗪基[5,6-b]吲哚,其乙酰化并进行部分乙酰化。腙的环链互变异构促进了它们的杂环化。产品选择了线性结构,而不是有角异构体的结构。该结构已从 1 的乙醛衍生物环化的模型研究中得到证实,发现其与 4,5-二氨基-3-甲基-1,2,4-三唑反应所得产物相同与靛红。还研究了腙及其环化产物的高碘酸盐氧化。