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N,N-二甲基-N′-(2′,3′-二脱氧-3′-硫代胞苷)甲脒水解机理的理论研究

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摘要 采用密度泛函理论B3LYP/6-31+G(d,p)方法研究了N,N-二甲基-N′-(2′,3′-二脱氧-3′硫代胞苷)甲脒(甲脒-3TC)分子在气相和水溶液中的水解反应机理.考虑了两条可能的反应途径:水分子首先进攻C=N双键的途径(PathA)和先进攻C—N单键的过程(PathB).计算结果表明气相中两条途径的第一步均是速率控制步骤,PathA比PathB更有利.采用自洽反应场极化连续模型(CPCM模型)在B3LYP/6-31+G(d,p)水平上研究了反应体系在水溶液中的溶剂化效应.溶液中第一条途径PathA仍是最优途径.
作者 张嫦 薛英
出处 《中国科学(B辑)》 CSCD 北大核心 2008年第5期404-410,共7页 Science in China(Series B)
基金 国家自然科学基金(批准号:20473055和20773089)资助项目
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  • 1Anastasi C, Hantz O, Clercq F D, Pannecouque C. Potent nonclassical nucleoside antiviral drugs based on the N,N-diarylforma- midine concept. J Med Chem, 2004, 47:1183-1192.
  • 2Wu Y, Xue Y, Xie D Q, Kim C C, Yan G S. Theoretical studies on the hydrolysis mechanism of N-(2-oxo-1,2-dihydro-pyrimidinyl)formamide. J Phys Chem B, 2007, 111:2357-2364.
  • 3Peeters D, Leroy G, Wilante C. Proton affinities and proton transfer in imine, amidine and guanidine series. J Mol Struct, 1997, 416: 21-32.
  • 4Simperler A, Mikenda W, Schwarz K. Proton motion and proton transfer in the formamidine-formic acid complex: an ab initio projector augmented wave molecular dynamics study. Chem EurJ, 2001, 7:1606-1613.
  • 5Zhang Q, Bell R, Truong T N. Ab initio and density functional theory studies of proton transfer reactions in multiple hydrogen bond systems, J Phys Chem, 1995, 99; 592-599.
  • 6Nguyen K A, Gordon M S, Truhlar D G. Effect of hydration and dimerization of the formamidine rearrangement. J Am Chem Soc, 1991, 113:1596-1600.
  • 7Lim J H, Lee E K, Kim Y. Theoretical study for solvent sffect on the potential energy surface for the double proton transfer in formic acid dimer and formamidine dimer. J Phys Chem, 1997, 101:2233-2239.
  • 8AndrOs J, Beltran A, Carda M, Krechl J, Monterde J, Silla E. Amidine decomposition mechanism. A theoretical study. J Mol Struct (Theochem.), 1992, 254:465-472.
  • 9Flinn C, Poirier R A, Sokalski W A. Ab initio study of the deamination of formamidine. J Phys Chem A, 2003, 107:11174-11181.
  • 10Fukui K. A formulation of the reaction coordinate. J Phys Chem, 1970, 74:4161-4163.

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