Omega-conotoxin GVIA mimetics based on an anthranilamide core: effect of variation in ammonium side chain lengths and incorporation of fluorine.
Bioorg Med Chem
; 17(18): 6659-70, 2009 Sep 15.
Article
en En
| MEDLINE
| ID: mdl-19683451
ABSTRACT
A number of omega-conotoxin GVIA mimetics based on an anthranilamide core were prepared and tested for their affinity for rat brain Ca(v)2.2 channels. Features such as the presence of hydroxyl and fluoro substituents on the tyrosine side chain mimic, the length of the chains on the lysine/arginine side chain mimics and the use of diguanidino and diamino substituents rather than mono-guanidine/mono-amine substitution were examined. The diguanidinylated compounds proved to be the most active and deletion of the hydroxyl substituent had a limited influence on activity. The SAR associated with variation in the lysine/arginine side chain mimics was not strong. The introduction of a fluoro substituent into the tyrosine mimic produced the most active compound prepared in this study (2g), with an EC(50) at rat brain Ca(v)2.2 channels of 6 microM.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Bloqueadores de los Canales de Calcio
/
Canales de Calcio Tipo N
/
Omega-Conotoxina GVIA
/
Ortoaminobenzoatos
Límite:
Animals
Idioma:
En
Revista:
Bioorg Med Chem
Asunto de la revista:
BIOQUIMICA
/
QUIMICA
Año:
2009
Tipo del documento:
Article
País de afiliación:
Australia