Cyclotetrapeptide Complexes of Nickel(
<scp>II</scp>
) and Palladium(
<scp>II</scp>
) by Template Synthesis from Dipeptide Esters with Functionalized Side Chains − Crystal Structure of [(
<i>cyclo</i>
‐Gly‐β‐Ala‐Gly‐β‐Ala‐4H
<sup>+</sup>
)Cu](PPN)
<sub>2</sub>
作者:Jan Schapp、Katharina Haas、Karlheinz Sünkel、Wolfgang Beck
DOI:10.1002/ejic.200300067
日期:2003.10
The cyclocondensations of dipeptide esters [Gly-L-Asp(OMe)2, Gly-L-Glu(OMe)2, L-AspOMe-β-AlaOMe, β-Ala-L-Lys(ψ-N-Boc,OMe), β-Ala-L-Orn(ψ-N-Boc,OMe)] at nickel(II), palladium(II), and copper(II) templates give dianionic square-planar complexes of deprotonated cyclotetrapeptides that contain functional groups in the side chains. The complexes with 14- or 16-membered rings were isolated as [Ph3PNPPh3]+
二肽酯的环缩合反应 [Gly-L-Asp(OMe)2, Gly-L-Glu(OMe)2, L-AspOMe-β-AlaOMe, β-Ala-L-Lys(ψ-N-Boc,OMe) , β-Ala-L-Orn(ψ-N-Boc,OMe)] 在镍 (II)、钯 (II) 和铜 (II) 模板上产生去质子化环四肽的双阴离子方形平面复合物,其中含有官能团侧链。具有 14 或 16 元环的复合物被分离为 [Ph3PNPPh3]+ 盐。[环-Gly-Asp(OMe)-Gly-Asp(OMe)-4H+]Pd}2-的水解得到四阴离子复合物[环-Gly-Asp(O-)-Gly-Asp(O-)- 4H+}Pd]4-(Li+)2(PNP+)2。还报道了[(环-Gly-β-Ala-Gly-β-Ala-4H+)Cu](PPN)2 的晶体结构。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451