Design, synthesis and biological evaluation of novel tetrahydroisoquinoline derivatives as P-glycoprotein-mediated multidrug resistance inhibitors

Publication date: Available online 3 April 2018
Source:Bioorganic & Medicinal Chemistry
Author(s): Yang Gao, Wei Shi, Jian Cui, Chunxia Liu, Xinzhou Bi, Zhuo Li, Wenlong Huang, Guangji Wang, Hai Qian
Multidrug resistance (MDR) is one of the main obstacles of clinical chemotherapy. A great deal of research shows that the occurrence of drug resistance in various malignant tumors is closely related to the expression of P-glycoprotein (P-gp) on the surface of the cell membrane. In this paper, based on the structure-activity relationship of phenylethyl tetrahydroisoquinoline, we choose tariquidar as the lead compound for the design and synthesis of 17 novel tetrahydroisoquinoline P-gp inhibitors. Additionally, in vitro and in vivo cytotoxicity assays and reversed MDR activity assays were evaluated. Among them, compound 3 had a good reversal of MDR activity and the reversal mechanism study of it was carried out. All of these results demonstrated that compound 3 was considered to be a promising P-gp-mediated MDR reversal candidate.

Graphical abstract

https://ift.tt/2q1hvDW