[EN] NEW STEROID INHIBITORS OF PGP FOR USE FOR INHIBITING MULTIDRUG RESISTANCE [FR] NOUVEAUX INHIBITEURS STÉROÏDIENS DE PGP POUR EMPLOI DANS L'INHIBITION DE LA RÉSISTANCE PLÉIOTROPE
NEW STEROID INHIBITORS OF PGP FOR USE FOR INHIBITING MULTIDRUG RESISTANCE
申请人:Grenot Catherine
公开号:US20120309728A1
公开(公告)日:2012-12-06
The present invention relates to a compound of formula (I) for its use for reversing or inhibiting multidrug resistance.
本发明涉及一种式(I)的化合物,用于逆转或抑制多药耐药。
Synthesis of New Steroidal Inhibitors of P-Glycoprotein-Mediated Multidrug Resistance and Biological Evaluation on K562/R7 Erythroleukemia Cells
作者:Marc Rolland de Ravel、Ghina Alameh、Maxime Melikian、Zahia Mahiout、Agnès Emptoz-Bonneton、Eva-Laure Matera、Thierry Lomberget、Roland Barret、Luc Rocheblave、Nadia Walchshofer、Sonia Beltran、Lucienne El Jawad、Elisabeth Mappus、Catherine Grenot、Michel Pugeat、Charles Dumontet、Marc Le Borgne、Claude Yves Cuilleron
DOI:10.1021/jm501676v
日期:2015.2.26
A simple route for improving the potency of progesterone as a modulator of P-gp-mediated multidrug resistance was established by esterification or etherification of hydroxylated 5 alpha/beta-pregnane-3,20-dione or 5 beta-cholan-3-one precursors. X-ray crystallography of representative 7 alpha-, 11 alpha-, and 17 alpha-(2'R/S)-O-tetrahydropyranyl ether diastereoisomers revealed different combinations of axial-equatorial configurations of the anomeric oxygen. Substantial stimulation of accumulation and chemosensitization was observed on K562/R7 erythroleukemia cells resistant to doxorubicin, especially using 7 alpha,11 alpha-O-disubstituted derivatives of 5 alpha/beta-pregnane-3,20-dione, among which the 5 beta-H-7 alpha-benzoyloxy-11 alpha-(2'R)-O-tetrahydropyranyl ether 22a revealed promising properties (accumulation index 2.9, IC50 0.5 mu M versus 1.2 and 10.6 mu M for progesterone), slightly overcoming those of verapamil and cyclosporin A. Several 7 alpha,12 alpha-O-disubstituted derivatives of 5 beta-cholan-3-one proved even more active, especially the 7 alpha-O-methoxymethyl-12 alpha-benzoate 56 (accumulation index 3.8, IC50 0.2 mu M). The panel of modulating effects from different O-substitutions at a same position suggests a structural influence of the substituent completing a simple protection against stimulating effects of hydroxyl groups on P-gp-mediated transport.
[EN] NEW STEROID INHIBITORS OF PGP FOR USE FOR INHIBITING MULTIDRUG RESISTANCE<br/>[FR] NOUVEAUX INHIBITEURS STÉROÏDIENS DE PGP POUR EMPLOI DANS L'INHIBITION DE LA RÉSISTANCE PLÉIOTROPE
申请人:INST NAT SANTE RECH MED
公开号:WO2011073419A1
公开(公告)日:2011-06-23
The present invention relates to a compound of formula (I) for its use for reversing or inhibiting multidrug resistance.