Linked Life Data

21183355

Source:http://linkedlifedata.com/resource/pubmed/id/21183355

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2011-1-3
pubmed:abstractText
Previous studies have shown that harmine is a reversible inhibitor of human monoamine oxidase A (MAO-A). Moreover, the crystal structure of human MAO-A in complex with harmine has been recently solved. This crystal structure shows that close to the methoxy group of the harmine moiety, a lipophilic pocket is left vacant within the binding site of human MAO-A. Our objective was to optimize the ?-carboline series against human MAO-A in order to explore this pocket. Therefore, a series of ?-carboline derivatives has been synthesized. The compounds were evaluated for their human monoamine oxidase A and B inhibitory potency and their K(i) values were estimated. The results show that O-alkylated compounds with lipophilic groups like cyclohexyl, phenyl and aliphatic chains increase the inhibition of MAO-A compared to harmine. Compound 3e, with the trifluorobutyloxy group, was the most active of this series, with a K(i) against MAO-A of 3.6nM. Molecular docking studies show that the trifluorobutyloxy chain occupies the hydrophobic pocket vacant with harmine. The O-alkylated compounds are less active on MAO-B than on MAO-A. However, several compounds show a better inhibition on MAO-B compared to harmine. Compound 3f, with the cyclohexylmethoxy chain, displayed the best inhibitory activity against MAO-B with a K(i) value of 221.6nM. This cyclohexyl bearing analogue is also a potent MAO-A inhibitor with a K(i) value of 4.3nM. Molecular docking studies show that the cyclohexyl chain also occupies a hydrophobic pocket but in different ways in MAO-A or MAO-B.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
1464-3391
pubmed:author
pubmed:copyrightInfo
Copyright © 2010 Elsevier Ltd. All rights reserved.
pubmed:issnType
Electronic
pubmed:day
1
pubmed:volume
19
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
134-44
pubmed:meshHeading
pubmed:year
2011
pubmed:articleTitle
Synthesis and evaluation of ?-carboline derivatives as potential monoamine oxidase inhibitors.
pubmed:affiliation
Drug Design and Discovery Center, Laboratoire de Chimie Biologique Structurale, Facultés Universitaires Notre-Dame de la Paix, Namur, Belgium.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't