ALKYNE-, AZIDE- AND TRIAZOLE-CONTAINING FLAVONOIDS AS MODULATORS FOR MULTIDRUG RESISTANCE IN CANCERS
申请人:The Hong Kong Polytechnic University
公开号:US20150011513A1
公开(公告)日:2015-01-08
A triazole bridged flavonoid dimer compound library was efficiently constructed via the cycloaddition reaction of a series of flavonoid-containing azides (Az 1-15) and alkynes (Ac 1-17). These triazole bridged flavonoid dimers and their precursor alkyne- and azide-containing flavonoids were screened for their ability to modulate multidrug resistance (MDR) in P-gp-overexpressed cell line (LCC6MDR), MRP1-overexpressed cell line (2008/MRP1) and BCRP-overexpressed cell line (HEK293/R2 and MCF7-MX100). Generally, they displayed very promising MDR reversal activity against P-gp-, MRP1- and BCRP-mediated drug resistance. Moreover, they showed different levels of selectivity for various transporters. Overall, they can be divided into mono-selective, dual-selective and multi-selective modulators for the P-gp, MRP1 and BCRP transporters. The EC50 values for reversing paclitaxel resistance (141-340 nM) of LCC6MDR cells, DOX (78-590 nM) and vincristine (82-550 nM) resistance of 2008/MRP1 cells and topotecan resistance (0.9-135 nM) of HEK293/R2 and MCF7-MX100 cells were at nanomolar range. Importantly, a number of compounds displayed EC50 at or below 10 nM in BCRP-overexpressed cell lines, indicating that these bivalent triazoles more selectively inhibit BCRP transporter than the P-gp and MRP1 transporters. Most of the dimers are notably safe MDR chemosensitizers as indicated by their high therapeutic index values.
Die vorliegende Erfindung betrifft neue Dithiinopyridazinon-Derivate, Verfahren zu deren Herstellung, deren Verwendung zum Bekämpfen von unerwünschten Mikroorganismen, insbesondere phytopathogener Pilze, im Pflanzenschutz, im Bereich Haushalt und Hygiene und im Materialschutz, sowie Pflanzenschutzmittel enthaltend diese Dithiinopyridazinon-Derivate.
[DE] DITHIINOPYRIDAZINON-DERIVATE<br/>[EN] DITHIINOPYRIDAZINONE DERIVATIVES<br/>[FR] DÉRIVÉS DE DITHIINOPYRIDAZINONE
申请人:BAYER CROPSCIENCE AG
公开号:WO2011128302A2
公开(公告)日:2011-10-20
Die vorliegende Erfindung betrifft neue Dithiinopyridazinon-Derivate, Verfahren zu deren Herstellung, deren Verwendung zum Bekämpfen von unerwünschten Mikroorganismen, insbesondere phytopathogener Pilze, im Pflanzenschutz, im Bereich Haushalt und Hygiene und im Materialschutz, sowie Pflanzenschutzmittel enthaltend diese Dithiinopyridazinon-Derivate.