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Bioorg Med Chem. 2014 Apr 1;22(7):2311-9. doi: 10.1016/j.bmc.2014.02.005. Epub 2014 Feb 15.

Synthesis, biological evaluation and 3D-QSAR studies of new chalcone derivatives as inhibitors of human P-glycoprotein.

Author information

1
Institute of Medical Chemistry, Medical University Vienna, Waehringer Strasse 10, 1090 Vienna, Austria; Abdul Wali Khan University Mardan, Malakand Mardan Rd, Mardan, Pakistan.
2
University of Vienna, Department of Medicinal Chemistry, Althanstrasse 14, 1090 Vienna, Austria.
3
Institute of Medical Chemistry, Medical University Vienna, Waehringer Strasse 10, 1090 Vienna, Austria.
4
University of Vienna, Department of Medicinal Chemistry, Althanstrasse 14, 1090 Vienna, Austria. Electronic address: gerhard.f.ecker@univie.ac.at.

Abstract

P-glycoprotein (P-gp) is an ATP-dependent multidrug resistance efflux transporter that plays an important role in anticancer drug resistance and in pharmacokinetics of medicines. Despite a large number of structurally and functionally diverse compounds, also flavonoids and chalcones have been reported as inhibitors of P-gp. The latter share some similarity with the well studied class of propafenones, but do not contain a basic nitrogen atom. Furthermore, due to their rigidity, they are suitable candidates for 3D-QSAR studies. In this study, a set of 22 new chalcone derivatives were synthesized and evaluated in a daunomycin efflux inhibition assay using the CCRF.CEM.VCR1000 cell line. The compound 10 showed the highest activity (IC50=42nM), which is one order of magnitude higher than the activity for an equilipohillic propafenone analogue. 2D- and 3D-QSAR studies indicate the importance of H-bond acceptors, methoxy groups, hydrophobic groups as well as the number of rotatable bonds as pharmacophoric features influencing P-gp inhibitory activity.

KEYWORDS:

ABCB1; Chalcones; GRIND; MDR; P-glycoprotein

PMID:
24613626
DOI:
10.1016/j.bmc.2014.02.005
[Indexed for MEDLINE]

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