制备了一种新的内消旋-四烷基卟啉锰配合物5,10,15,20-四(乙氧基羰基)卟啉锰(Mn III TECPCl),并通过X射线结构测定对其进行了表征。Mn III TECPCl在其晶体结构中以配位二聚体形式存在,在两个Mn(III)离子之间具有弱的反铁磁耦合。Mn III TECPCl在苯乙烯中催化苯乙烯的氧化。当使用TBHP作为氧化剂时,发现Mn III TECPCl具有较高的转化效率,并且可以循环利用,主要产物是苯甲醛。锰IIITECPCl也可以通过使用PhIO氧化剂重新使用,但主要产物为苯基乙醛和苯乙烯环氧化物。
Superoxide dismutase mimetics. Part 2: synthesis and structure–Activity relationship of glyoxylate- and glyoxamide-Derived metalloporphyrins
作者:Michael P Trova、Polivina Jolicia F Gauuan、Anthony D Pechulis、Stephen M Bubb、Stephen B Bocckino、James D Crapo、Brian J Day
DOI:10.1016/s0968-0896(03)00272-4
日期:2003.7
Novel glyoxylate- and glyoxamide-derived metalloporphyrins 26-58 were synthesized and evaluated as potential superoxide dismutase (SOD) mimetics. Relative to previously studied MnTBAP analogues, the glyoxylate-derived metalloporphyrins 32, 39, and 54 and glyoxamide-derived metalloporphyrin 49, exhibited enhanced activity in the SOD assay and the majority of the analogues in the current series showed enhanced inhibition of lipid peroxidation and catalase activity. (C) 2003 Elsevier Science Ltd. All rights reserved.
Complementary Strategies for Developing Gd-Free High-Field <i>T</i><sub>1</sub> MRI Contrast Agents Based on Mn<sup>III</sup> Porphyrins
作者:Weiran Cheng、Inga E. Haedicke、Joris Nofiele、Francisco Martinez、Kiran Beera、Timothy J. Scholl、Hai-Ling Margaret Cheng、Xiao-an Zhang
DOI:10.1021/jm401124b
日期:2014.1.23
Mn-III porphyrin (MnP) holds the promise of addressing the emerging challenges associated with Gd-based clinical MRI contrast agents (CAs), namely, Gd-related adverse effect and decreasing sensitivity at high clinical magnetic fields. Two complementary strategies for developing new MnPs as Gd-free CAs with optimized biocompatibility were established to improve relaxivity or clearance rate. MnPs with distinct and tunable pharmacokinetic properties can consequently be constructed for different in vivo applications at clinical field of 3 T.