Structure-Activity Relationships Studies in a Series of N,N-Bis(alkanol)amine Aryl Esters as P-Glycoprotein (Pgp) Dependent Multidrug Resistance (MDR) Inhibitors

摘要

As a continuation Or a previous research, a series of N,N-bis(alkanol)amine aryl esters, as Pgp-dependent MDR inhibitors, was; designed and synthesized. The aromatic ester portions are suitably modulated, and new aryl rings (Ar-1 and Ar-2) were combined with trans-3-(3,4,5-trimethoxyphenyl)-vinyl, 3,4,5-trimethoxybenzyl and anthracene moieties that were present in the most potent previously Studied compounds. The new compounds showed I wide range of potencies and efficacies Oil doxorubicin-resistant erythroleukemia K562 cells (K562/DOX) in the pirarubicin uptake assay. Selected compounds (5, 6, 8, 9, and 21) were further Studied, evaluating their action on doxorubicin cytotoxicity potentiation oil K562 cells; they significantly enhanced doxorubicin cytotoxicity oil K562/DOX cells, confirming the results obtained with pirarubicin. Compound 9 Shows file Most promising properties as it was able to nearly completely reverse Pgp-dependent pirarubicin extrusion at nanomolar closes and increased the cytotoxicity of doxorubicin with a reversal fold (RF) of 19.1 at 3 mu M dose.