The Stability of Fused Rings in Metal Chelates. VII. Copper(II) Complexes of Schiff Bases Derived from 2-Acetylpyridine or Pyridine-2-aldehyde and Dipeptides Containing Glycine, β-Alanine and/or α-Aminoisobutyric Acid
作者:Yasuo Nakao、Hiroyuki Ishibashi、Akitsugu Nakahara
DOI:10.1246/bcsj.43.3457
日期:1970.11
pyridine derivatives and the second and third numbers represent those of ring members containing dipeptide moieties). The conclusion proposed previously that SchifF base chelates of aldehydes are generally less stable than those of corresponding ketones, has been proved to be valid also for the copper(II) chelates. It was found that transamination reactions take place in the copper(II) chelates of Schiff
制备了 8 种由 2-乙酰吡啶或吡啶-2-醛衍生的 SchifF 碱与含有甘氨酸、β-丙氨酸和/或 α-氨基异丁酸的二肽的新型铜 (II) 配合物,并在此基础上讨论了它们的相对稳定性通过分光光度法、极谱法和其他测量方法获得的数值数据。结果发现稠环系统的稳定性以5-5-6-\simeq5-6-5->5-5-5->5-6-6-system(第一个数字代表含有吡啶衍生物的环成员的数目,第二和第三个数字代表含有二肽部分的环成员的数目)。先前提出的醛的 SchifF 碱螯合物通常不如相应酮的稳定的结论已被证明对铜 (II) 螯合物也有效。