Acidic hydrolysis of 6-substituted 9-(2-deoxy-β--- pentofuranosyl) purines and their 9-(1-alkoxyethyl) counter-parts: kinetics and mechanism.1
作者:Mikko OivanXXXn、Harri Lönnberg、Xiao-xiong Zhou、Jyoti Chattopadhyaya
DOI:10.1016/s0040-4020(01)90052-3
日期:1987.1
The rate constants for the hydrolysis of several 6-substituted 9-(2-deoxy-β-D-erythro-pentofuranosyl)purines and 9-(1-alkoxyethyl) purines have been measured at different concentrations of oxonium ion. The effects that varying the polar nature of the alkoxy group exerts on the hydrolysis of unsubstituted 9-(1-alkoxyethyl) purines are interpreted to indicate that the reaction proceeds by a rate-limiting
已经在不同浓度的氧离子下测量了几种6-取代的9-(2-脱氧-β-D-赤-戊呋喃糖基)嘌呤和9-(1-烷氧基乙基)嘌呤的水解速率常数。解释了改变烷氧基极性性质对未取代的9-(1-烷氧基乙基)嘌呤水解的影响,这表明该反应是通过质子化碱部分的限速离去并伴随形成一个烷氧基乙基氧碳鎓离子。通过比较6-取代基对这些化合物及其9-(1-烷氧基乙基)反应剂的反应性的影响,将相同的机理应用于9-(2-脱氧-β-D-赤-戊呋喃糖基)嘌呤的水解。 -部分。当2'-脱氧腺苷水解后进行1 H NMR光谱。