with boron trichloride to generate ribofuranosyl chlorides, which afforded precursors for tracers to image tumor hypoxia on substitution with salts of 2-nitroimidazole. The anomeric ratio of the nucleosides was delicately influenced by the reaction conditions. GRAPHICAL ABSTRACT:
摘要:
2-脱氧-D-核糖被转化为甲基3-O-乙酰基和甲基3-O-苯甲酰基-2-脱氧-5-(对
甲苯磺酰基)-D-
呋喃呋喃糖苷的α/β-混合物。它们与
三氯化硼反应生成
呋喃呋喃糖酰
氯,从而提供了示踪剂的前体,以示踪剂可以在被
2-硝基咪唑盐取代后对肿瘤缺氧进行成像。核苷的异头比例受反应条件的影响很小。图形概要: