Tautomeric Self-Dimerization and Molecular Recognition Properties of2-Aminopyrimidinone Derivatives as Triple Hydrogen-Bonding Modules in Molecular Assemblies
作者:Hajime Abe、Masayoshi Takase、Yasuhiro Doi、Shinya Matsumoto、Masaru Furusyo、Masahiko Inouye
DOI:10.1002/ejoc.200500010
日期:2005.7
of the three-point hydrogen-bonding including two kinds of tautomers of the module in an ADD·DAA mode. Selective recognition of the module for a cytidine derivative was also observed, and the free energy change for the complexation (ΔG298 = –31 kJ/mol) is one of the highest values among triple hydrogen-bonded complexes so far reported. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)
开发了基于 6-alkynyl-2-amino-3H-pyrimidin-4-one 的三重氢键模块,例如用于自二聚化和核碱基识别过程。自二聚化模块的强度由 NMR 和氯仿中的荧光分析确定(ΔG298 = –22 至 –23 kJ/mol)。DFT计算和X射线结构分析表明,自二聚化由包含模块的两种互变异构体的三点氢键以ADD·DAA模式组成。还观察到该模块对胞苷衍生物的选择性识别,并且络合的自由能变化 (ΔG298 = –31 kJ/mol) 是迄今为止报道的三重氢键络合物中最高的值之一。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)