Cu II与大环五胺1,4,7,10,13-戊-氮杂环十五烷(L 1),1,4,7,10,13-戊-氮杂环十六烷(L 2)之间形成配合物的平衡和动力学,和1,4,7,11,14-戊-氮杂环庚烷(L 3)已进行了研究。用极谱法确定了形成1:1配合物的热力学函数:分别对于L 1,L 2和L 3,log K C u L 28.3、27.1和23.8,–Δ H 32.9、32.7和27.2 kcal mol –1和ΔS 22、14和18 cal K –1 mol–1(在/ 0.2 mol dm –3和25°C时)。与四胺的熵有利的大环效应相反,由五胺的环化引起的大的稳定性增强归因于有利的焓因子。动力学研究已经建立了乙酸盐缓冲液中络合物形成的速率规律,即d [CuL] / d t = k 2 H [Cu(O 2 CMe) + ] [H 2 L 2+ ] + k 3 H [Cu(O 2 CMe) + ]
Chemokine combinations to mobilize progenitor/stem cells
申请人:Bridger J. Gary
公开号:US20060035829A1
公开(公告)日:2006-02-16
Methods to elevate progenitor and stem cell counts in animal subjects using compounds which bind to the chemokine receptor CXCR4 in combination with the CXCR2 chemokine GROβ, including its modified forms, are disclosed.
Methods to elevate progenitor and stem cell counts in animal subjects using compounds which bind to the chemokine receptor CXCR4 are disclosed. Preferred embodiments of such compounds are of the formula
Z-linker-Z′ (1)
or pharmaceutically acceptable salt thereof
wherein Z is a cyclic polyamine containing 9-32 ring members of which 3-8 are nitrogen atoms, said nitrogen atoms separated from each other by at least 2 carbon atoms, and wherein said heterocycle may optionally contain additional heteroatoms besides nitrogen and/or may be fused to an additional ring system;
or Z is of the formula
1
wherein A comprises a monocyclic or bicyclic fused ring system containing at least one N and B is H or an organic moiety of 1-20 atoms,
Z′ may be embodied in a form as defined by Z above, or alternatively may be of the formula
—N(R)—(CR
2
)
n
—X
wherein each R is independently H or straight, branched or cyclic alkyl (1-6C), n is 1 or 2, and X is an aromatic ring, including heteroaromatic rings, or is a mercaptan;
“linker” represents a bond, alkylene (1-6C) or may comprise aryl, fused aryl, oxygen atoms contained in an alkylene chain, or may contain keto groups or nitrogen or sulfur atoms.
High-spin nickel(II) complexes of penta-aza macrocycles: characterization, electronic spectra, and thermodynamic properties
作者:Luigi Fabbrizzi、Mauro Micheloni、Piero Paoletti、Antonio Poggi、Alfred B. P. Lever
DOI:10.1039/dt9810001438
日期:——
High-spin nickel(II) complexes of 15-, 16-, and 17-membered saturated penta-aza macrocycles [1,4,7,10,13-penta-azacyclopentadecane (L1); 1,4,7,10,13-penta-azacyclohexadecane (L2); and 1,4,7,11,14-penta-azacycloheptadecane (L3)] have been synthesized and characterized. Their electronicspectra, magnetic moments, and heats of formation are reported. The complexes appear to form distorted octahedra in
failed, we could prepare stable aqueous solutions of the Ag(II) complexes of [15]aneN5, [16]aneN5, and their acetic acid derivatives by disproportionation reactions of Ag(I) induced by these polyazamacrocycles, and have investigated their electrochemical redox behaviors using conventional voltammetric methods. All Ag(II) complexes including the [14]aneN4 (cyclam) complex undergo a reversible two-electron
The present invention discloses the use of a complement 3a receptor (C3aR) antagonist and a mobilizer of hematopoietic stem cells and/or progenitor cells in methods and compositions for stimulating or enhancing the development, mobilization, proliferation and/or differentiation of a neutrophil-containing leukocyte population that inhibits growth and/or spread of a tumor and for treating or preventing a hyperproliferative cell disorder.