Synthesis and ionophoric activities of functionalized bis(choloyl) conjugates with a rigid core.
Bioorg Med Chem Lett
; 23(11): 3145-8, 2013 Jun 01.
Article
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| MEDLINE
| ID: mdl-23639545
ABSTRACT
Three bis(choloyl) conjugates bearing a rigid p-phenylenediamine/p-bis(aminomethyl)benzene linker and amino/acetamido groups were synthesized, and fully characterized on the basis of (1)H NMR, ESI-MS and HRMS. Their ionophoric activities were investigated by means of pH discharge assay. The results indicate that these conjugates exhibit potent ionophoric activities across egg-yolk l-α-phosphatidylcholine (EYPC)-based liposomal membranes, via a cation/proton antiport mechanism. They show moderate ion selectivity among alkali metal ions. Of the three conjugates, the ones having amino groups transport alkali metal ions in the order of Na(+)>Li(+)>K(+)≈Rb(+)≈Cs(+), whereas the one having acetamido groups functions in the order of Li(+)>Na(+)>K(+)≈Rb(+)≈Cs(+).
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1
Colección:
01-internacional
Banco de datos:
MEDLINE
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Ionóforos
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En
Revista:
Bioorg Med Chem Lett
Asunto de la revista:
BIOQUIMICA
/
QUIMICA
Año:
2013
Tipo del documento:
Article