Substituent effects on the basicity (pK<sub>a</sub>) of aryl guanidines and 2-(arylimino)imidazolidines: correlations of pH-metric and UV-metric values with predictions from gas-phase ab initio bond lengths
作者:Christophe Dardonville、Beth A. Caine、Marta Navarro de la Fuente、Guillermo Martín Herranz、Beatriz Corrales Mariblanca、Paul L. A. Popelier
DOI:10.1039/c7nj02497e
日期:——
compounds was very good with deviations typically <0.30 and <0.24 pKa units, and a mean absolute error (MAE) of 0.23 and 0.29, respectively. The study of the quantitative effect of diverse substituents on the basicity of aryl guanidine and 2-(arylimino)imidazolidine derivatives is useful for medicinal chemists working with biologically relevant guanidine-containing molecules.
的两个相关系列2-(芳基亚氨基)咪唑烷和芳基胍α的解离常数2 -肾上腺素能受体拮抗剂(化合物35总共)通过电势滴定,并通过使用96孔微量滴定板方法紫外分光光度法测定。使用这两种方法获得的实验值是非常一致的,并且与使用AIBLHiCoS方法计算的p K a值非常吻合,该方法仅使用了从头算的低理论水平获得的单键长度。咪唑烷和胍组化合物的预测能力非常好,偏差通常<0.30和<0.24 p K a单位,平均绝对误差(MAE)分别为0.23和0.29。研究各种取代基对芳基胍和2-(芳基氨基)咪唑烷衍生物的碱性的定量作用的研究对从事与生物学相关的含胍分子的药物化学家是有用的。
Guanidine and 2-Aminoimidazoline Aromatic Derivatives as α<sub>2</sub>-Adrenoceptor Antagonists, 1: Toward New Antidepressants with Heteroatomic Linkers
作者:Fernando Rodriguez、Isabel Rozas、Jorge E. Ortega、J. Javier Meana、Luis F. Callado
DOI:10.1021/jm070229q
日期:2007.9.1
The efficient preparation and pharmacological characterization of different families of (bis)guanidine and (bis)2-aminoimidazoline derivatives ("twin" and "half" molecules) as potential alpha(2)-adrenoceptor antagonists for the treatment of depression is presented. The affinity toward the alpha(2)-adrenoceptor of all the compounds prepared was measured in vitro in human brain tissue. Additionally,