The design of cobalt(III) complexes of phenazine-1-carboxamides as prointercalators and potential hypoxia-selective cytotoxins.
Anticancer Drug Des
; 14(3): 231-41, 1999 Jun.
Article
en En
| MEDLINE
| ID: mdl-10500498
A series of cobalt (III) complexes, [Co(Racac)2(L)]+, have been prepared as potential hypoxia-selective prointercalator forms of the ligands L, where L is the cytotoxic DNA mono-intercalating ligands N-[2-[(aminoethyl)amino]ethyl]-phenazine-1-carboxamide and N-[5-[(aminoethyl)amino]pentyl]-phenazine-1-carboxamide or the potentially bis(intercalating) ligand bis[2-(phenazine-1-carboxamido)ethyl]-1,2-diaminoethane. The cobalt(III) complexes of the monointercalating ligands have significantly lower DNA binding affinity and cytotoxicity than the ligands themselves, indicating the potential utility of this prodrug approach for deactivation (and release under hypoxic conditions). However, the complexes showed only low hypoxic selectivity. The complex of the bis(intercalating) ligand also showed significantly lower DNA binding affinity than the free ligand, but in this case there was no attenuation of cytotoxicity.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Compuestos Organometálicos
/
Fenazinas
/
Cobalto
/
Sustancias Intercalantes
/
Antineoplásicos
Límite:
Animals
Idioma:
En
Revista:
Anticancer Drug Des
Asunto de la revista:
ANTINEOPLASICOS
/
FARMACOLOGIA
Año:
1999
Tipo del documento:
Article
País de afiliación:
Australia
Pais de publicación:
Estados Unidos