An improved procedure for the preparation of 2-amino-8-alkylpyrido-[2,3-<i>d</i>]pyrimidin-4(3<i>H</i>)-ones (8-alkyl-N5-deazapterins)
作者:Michael T. G. Ivery、Jill E. Gready
DOI:10.1002/jhet.5570310615
日期:1994.11
We report an improved procedure for the preparation of 8-alkyl-N5-deazapterins which allows clean preparation of all ring-methyl substituted compounds, including 5- and 7-methyl substituted compounds. The procedure was also successfully applied to the preparation of N5-deazapterins with improved yield over previous reports. The uv/visible and pKa data confirm the predicted increased basicity of 8-
我们报告了一个改进的程序,用于制备8-烷基-N5-脱氮杂环丁烷,它允许干净地制备所有环甲基取代的化合物,包括5-和7-甲基取代的化合物。该方法还成功地用于制备N5-脱氮杂陈蛋白,其收率比以前的报告有所提高。uv / visible和p K a数据证实了与N5-deazapterin亲本相比,预计的8-烷基-N5-deazapterins碱性增加,并且表明N5-deazapterins在N8上质子化,而8-烷基-N5-deazapterins在N3上质子化。 。