Synthesis of novel acyclonucleosides. Reactions of 1-(1-bromo or 3-bromo-2-oxopropyl)pyridazin-6-ones
作者:Sam-Yong Choi、Sang-Gyeong Lee、Yong-Jin Yoon
DOI:10.1002/jhet.5570280514
日期:1991.8
Reaction of 1-(3-bromo-2-oxopropyl)pyridazin-6-ones 1 and 2 with sodium azide at room temperature gave the corresponding 1-(3-azido-2-oxopropyl)pyridazin-6-ones 3 and 4, whereas reaction of 1-(1-bromo-2-oxo-propyl)pyridazin-6-ones 5 and 6 with excess sodium azide afforded 4-azido-5-chloropyridazin-6-one 7 and 4,5-diazido-3-nitropyridazin-6-one 8 by dealkylation. Some 1-(2-hydroxypropyl)pyridazin-6-ones
1-(3-溴-2-氧代丙基)哒嗪-6-酮1和2在室温下与叠氮化钠反应,得到相应的1-(3-叠氮基-2-氧代丙基)哒嗪-6-酮3和4,而1-(1-溴-2-氧代丙基)哒嗪-6-酮5和6与过量叠氮化钠的反应得到4-叠氮基-5-氯哒嗪-6-酮7和4,5-二叠氮基-3-硝基哒嗪-6一8通过脱烷基作用。从相应的1-(2-氧丙基)衍生物1、2、3合成了一些1-(2-羟丙基)哒嗪-6-酮9、10、11。4,5-二氯-1-(2,3-二羟丙基)-哒嗪-6-one 13也由化合物9 经相应的2,3-环氧丙基衍生物12制备。用硫脲处理化合物5,得到4,5-二氯-1-(2-氨基-4-甲基噻唑-5-基)哒嗪-6-1 14。化合物1和2与硫脲在20°下反应,得到相应的3-甲ami基硫基-2-氧代丙基衍生物15和16,而化合物1在45°用硫脲处理得到4,5-二氯-1-[(2 -氨基噻唑-5-基)甲基]哒嗪-6-一17。还