Synthesis of 3-(α- and β-d-arabinofuranosyl)-6-chloro-1,2,4-triazolo[4,3-b]pyridazine
作者:Martin Šala、Renata Jakše、Jurij Svete、Amalija Golobič、Ljubo Golič、Branko Stanovnik
DOI:10.1016/s0008-6215(03)00347-1
日期:2003.9
5-di-O-isopropylidene-1-O-methanesulfonyl-D-arabinitols in refluxing 1,2-dimethoxyethane furnished 3-(alpha- and beta-D-arabinofuranosyl)-6-chloro-1,2,4-triazolo[4,3-b]pyridazine, respectively. Several structures, including the structure of the 3-(beta-D-arabinofuranosyl)-6-chloro-1,2,4-triazolo[4,3-b]pyridazine, were also determined by single-crystal X-ray diffraction analysis.
从三到四步制备二-O-异亚丙基-和O-甲磺酰基保护的1-C-(6-氯-1,2,4-三唑并[4,3-b]哒嗪-3-基)戊醇D-半乳糖,D-葡萄糖,D-甘露糖和2,3:5,6-二-O-异亚丙基-α-D-甘露聚糖。酸催化处理(1S)-和(1R)-1-C-(6-氯-1,2,4-三唑并[4,3-b]-哒嗪-3-基)-2,3:4 1,5-二-O-异亚丙基-1-O-甲磺酰基-D-阿拉伯糖醇在回流的1,2-二甲氧基乙烷中提供的3-(α-和β-D-阿拉伯呋喃糖基)-6-氯-1,2,4-三唑[4,3-b]哒嗪。还通过单晶X射线衍射分析确定了几种结构,包括3-(β-D-阿拉伯呋喃糖基)-6-氯-1,2,4-三唑并[4,3-b]哒嗪的结构。 。