Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2001-2-5
pubmed:abstractText
A novel series of 2- and 9-disubstituted heterocyclic-fused 4-oxo-indeno[1,2-e]pyrazin derivatives was synthesized. One of them, the 9-(1H-tetrazol-5-ylmethyl)-4-oxo-5,10-dihydroimidazo[1,2-a]indeno[1,2-e]pyrazin-2-yl phosphonic acid 4i exhibited a strong and a selective binding affinity for the AMPA receptor (IC50 = 13 nM) and demonstrated potent antagonist activity (IC50 = 6nM) at the ionotropic AMPA receptor. This compound also displayed good anticonvulsant properties against electrically-induced convulsions after ip and iv administration with ED50 values between 0.8 and 1 mg/kg. Furthermore, a strong increase in potency was observed when given iv 3 h before test (ED50 = 3.5 instead of 25.6 mg/kg for the corresponding 9-carboxymethyl-2-carboxylic acid analogue). These data confirmed that there is an advantage in replacing the classical carboxy substituents by their bioisosteres such as tetrazole or phosphonic acid groups.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0960-894X
pubmed:author
pubmed:issnType
Print
pubmed:day
22
pubmed:volume
11
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
127-32
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed-meshheading:11206442-Animals, pubmed-meshheading:11206442-Anticonvulsants, pubmed-meshheading:11206442-Combinatorial Chemistry Techniques, pubmed-meshheading:11206442-Disease Models, Animal, pubmed-meshheading:11206442-Excitatory Amino Acid Antagonists, pubmed-meshheading:11206442-Imidazoles, pubmed-meshheading:11206442-Inhibitory Concentration 50, pubmed-meshheading:11206442-Male, pubmed-meshheading:11206442-Mice, pubmed-meshheading:11206442-Oocytes, pubmed-meshheading:11206442-Pyrazinamide, pubmed-meshheading:11206442-Pyrazines, pubmed-meshheading:11206442-Receptors, AMPA, pubmed-meshheading:11206442-Receptors, N-Methyl-D-Aspartate, pubmed-meshheading:11206442-Seizures, pubmed-meshheading:11206442-Structure-Activity Relationship, pubmed-meshheading:11206442-alpha-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic Acid
pubmed:year
2001
pubmed:articleTitle
Bioisosteres of 9-carboxymethyl-4-oxo-imidazo[1,2-a]indeno-[1,2-e]pyrazin-2-carboxylic acid derivatives. Progress towards selective, potent in vivo AMPA antagonists with longer durations of action.
pubmed:affiliation
Aventis Pharma S.A., Centre de Recherche de Vitry-Alfortville, Vitry-sur-Seine, France.
pubmed:publicationType
Journal Article