108478-56-4Relevant articles and documents
SAR Studies on tetrahydroisoquinoline derivatives: The role of flexibility and bioisosterism to raise potency and selectivity toward P-glycoprotein
Capparelli, Elena,Zinzi, Laura,Cantore, Mariangela,Contino, Marialessandra,Perrone, Maria Grazia,Luurtsema, Gert,Berardi, Francesco,Perrone, Roberto,Colabufo, Nicola A.
, p. 9983 - 9994 (2014)
The development of P-glycoprotein (P-gp) ligands remains of considerable interest, mostly for investigating the proteins structure and transport mechanism. In recent years, many different generations of ligands have been tested for their ability to modulate P-gp activity. The aim of the present work is to perform SAR studies on tetrahydroisoquinoline derivatives in order to design potent and selective P-gp ligands. For this purpose, the effect of bioisosteric replacement and the role of flexibility have been investigated, and four series of tetrahydroisoquinoline ligands have been developed: (a) 2-aryloxazole bioisosteres, (b) elongated analogues, (c) 2H-chromene, and (d) 2-biphenyl derivatives. The results showed that both 2-biphenyl derivative 20b and elongated derivative 6g behaved as strong P-gp substrates. In conclusion, important aspects for developing potent and selective P-gp ligands have been highlighted, providing a solid starting point for further optimization.