Linked Life Data

15619727

Source:http://linkedlifedata.com/resource/pubmed/id/15619727

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2005-2-24
pubmed:abstractText
Three new unsymmetrical compartmental dinucleating ligands, 4-bromo-2-(4-methylpiperazin-1-ylmethyl)-6-[{2-(1-piperidyl)ethyl}aminomethyl]phenol (HL1), 4-bromo-2-(4-methylpiperazin-1-ylmethyl)-6-[{2-(morpholin-4-yl)ethyl}aminomethyl]phenol (HL2), and 4-bromo-2-(4-methylpiperazin-1-ylmethyl)-6-[{2-(thiomorpholin-4-yl)ethyl}aminomethyl]phenol (HL3), have been synthesized in order to model the active site of type 3 copper proteins. The dicopper(II) complexes of these ligands give first hints about the influence of a thioether group close to the metal site. The bromophenol-based ligands have one piperazine arm and one other bidentate arm in positions 2 and 6 of the phenolic ring, respectively. With each ligand a dinuclear copper(II) complex was prepared and structurally characterized. The copper ions were found to have square pyramidal environments and a mixture of endogenous phenoxo and exogenous acetate bridging. The influence of a heteroatom in one arm of the ligand on catecholase activity and speciation in solution was studied by UV/Vis spectroscopy, ESI-MS experiments and, DFT calculations.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0947-6539
pubmed:author
pubmed:issnType
Print
pubmed:day
4
pubmed:volume
11
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1201-9
pubmed:dateRevised
2009-8-4
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Less symmetrical dicopper(II) complexes as catechol oxidase models--an adjacent thioether group increases catecholase activity.
pubmed:affiliation
Institut für Anorganische und Analytische Chemie der Westfälischen Wilhelms-Universität, Wilhelm-Klemm-Strasse 8, 48149 Münster, Germany.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't