作者:Kenneth J. Broadley、Erica Burnell、Robin H. Davies、Alan T. L. Lee、Stephen Snee、Eric J. Thomas
DOI:10.1039/c6ob00244g
日期:——
N-methyl-β-D-ribofuranuronamides that were characterised by 2-dialkylamino-7-methyloxazolo[4,5-b]pyridin-5-ylmethyl substituents on N6 of interest for screening as selective adenosine A3 receptor agonists, have been synthesised. This work involved the synthesis of 2-dialkylamino-5-aminomethyl-7-methyloxazolo[4,5-b]pyridines and analogues that were coupled with the known 1′-(6-chloropurin-9-yl)-1′-
一系列的1'-(6-氨基嘌呤-9-基)-1'-脱氧-N-甲基-β - D-核呋喃核糖酰胺,其特征为2-二烷基氨基-7-甲基恶唑并[4,5- b ]吡啶-已经合成了用于筛选为选择性腺苷A 3受体激动剂的感兴趣的N 6上的5-基甲基取代基。这项工作涉及与已知的1'-(6-氯嘌呤-9-基)-1'-脱氧偶联的2-二烷基氨基-5-氨基甲基-7-甲基恶唑并[4,5- b ]吡啶和类似物的合成。- ñ -甲基- β- d -ribofuranuronamide。通过2,4-二甲基吡啶N的区域选择性官能化合成恶唑并[4,5- b ]吡啶-氧化物。发现这些反应的区域选择性取决于与2-二甲基氨基-5,7-二甲基恶唑并[4,5- b ]吡啶-N-氧化物在与三氟乙酸反应时在7-甲基上进行区域选择性官能化的杂环的性质。与4,6-二甲基-3-羟基吡啶-N-氧化物与乙酸酐的反应相反,后者导致6-甲基官能化。为了优化对A