1,4,7,10,13,16,19,22-Octaazacyclotetracosane-1,4,7,10,13,16,19,22-octaacetic Acid (H8OTEC) and 1,4,7,10,14,17,20,23-Octaazacyclohexacosane- 1,4,7,10,14,17,20,23-octaacetic Acid (H8OHEC): Synthesis and Characterization of Two Large Macrocyclic Polyamine Polycarboxylic Ligands and Some of Their Copper(II) and Lanthanide(III) Complexes
作者:Herbert Schumann、Ulrike A. Bottgef、Kerstin Zietzke、Holger Hemling、Gabriele Kociok-Kohn、Joachim Pickardt、F. Ekkehardt Hahnb、Adolf Zschunke、Birgit Schiefnef、Heinz Gries、Bernd Radiichel、Jobannes Platzeke
DOI:10.1002/cber.19971300221
日期:1997.2
macrocyclic amines using tert-butyl bromoacetate followed by acidic hydrolysis of the acetate protecting groups. The molecular structures of the intermediates 1,4,7,10,14,17,20,23-octaazacyclohexacosane (OHEC-amine) (8), and octa-tert-butyl 1,4,7,10,13,16,19,22- octaazacyclotetracosane-1,4,7,10,13,16,19,22-octaacetate (OTEC-ester) (11) are determined by X-ray crystal structure analysis. OHEC-amine 8 reacts
优化了两种新的大环多胺多羧酸配体1,4,7,10,14,17,20,23-八氮杂环六氢六烷1,4,7,10,14,17,20,23-八乙酸的合成(H 8 OHEC)(10)和1,4,7,10,13,16,19,22-八氮杂环四氢烷1,4,7,10,13,16,19,22-八乙酸(H 8 OTEC)(12) , 被表达。两者合成中的关键步骤是使用溴乙酸叔丁酯对相应的大环胺进行高产率的羧甲基化,然后对乙酸酯保护基进行酸性水解。中间体1,4,7,10,14,17,20,23-octaazacyclohexacosane(OHEC胺)(的分子结构8),和八-叔1,4-,7,10,13,16,19,22-辛基氮杂四环已烷-1,4,7,10,13,16,19,22-辛基乙酸酯(OTEC-酯)(11)通过X-射线晶体结构分析。OHEC-胺8与2当量反应。用CuSO 4生成双核络合物[Cu 2(OHEC-胺)](SO