Synthesis of 5-oxyquinoline derivatives for reversal of multidrug resistance

Autor: Torsten Dittrich, Nils Hanekop, Nacera Infed, Lutz Schmitt, Manfred Braun
Jazyk: angličtina
Rok vydání: 2012
Předmět:
Zdroj: Beilstein Journal of Organic Chemistry, Vol 8, Iss 1, Pp 1700-1704 (2012)
Druh dokumentu: article
ISSN: 1860-5397
DOI: 10.3762/bjoc.8.193
Popis: The inhibition of ABC (ATP binding cassette) transporters is considered a powerful tool to reverse multidrug resistance. Zosuquidar featuring a difluorocyclopropyl-annulated dibenzosuberyl moiety has been found to be an inhibitor of the P-glycoprotein, one of the best-studied multidrug efflux pumps. Twelve 5-oxyisoquinoline derivatives, which are analogues of zosuquidar wherein the dibenzosuberyl-piperazine moiety is replaced by either a diarylaminopiperidine or a piperidone-derived acetal or thioacetal group, have been synthesized as pure enantiomers. Their inhibitory power has been evaluated for the bacterial multidrug-resistance ABC transporter LmrCD and fungal Pdr5. Four of the newly synthesized compounds reduced the transport activity to a higher degree than zosuquidar, being up to fourfold more efficient than the lead compound in the case of LmrCD and about two times better for Pdr5.
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