Chemical Biology and Drug Design p. 901 - 906 (2017)
Update date:2022-08-11
Topics:
Kondaparla, Srinivasarao
Agarwal, Pooja
Srivastava, Kumkum
Puri, Sunil K.
Katti, Seturam B.
A series of novel bisquinoline compounds comprising N1-(7-chloroquinolin-4-yl) ethane-1,2-diamine and 7-chloro-N-(2-(piperazin-1-yl)ethyl)quinolin-4-amine connected with 7-chloro-4-aminoquinoline containing various amino acids is described. We have bio-evaluated the compounds against both chloroquine-sensitive (3D7) and chloroquine-resistant (K1) strains of Plasmodium falciparum in vitro. Among the series, compounds 4 and 7 exhibited 1.8- and 10.6-fold superior activity as compared to chloroquine (CQ; IC50?=?0.255?±?0.049?μm) against the K1 strain with IC50 values 0.137?±?0.014 and 0.026?±?0.007?μm, respectively. Furthermore, compound 7 also displayed promising activity against the 3D7 strain (IC50?=?0.024?±?0.003?μm) of P.?falciparum when compared to CQ. All the compounds in the series displayed resistance factor between 0.57 and 4.71 as against 51 for CQ. These results suggest that bisquinolines can be explored for further development as new antimalarial agents active against chloroquine-resistant P.?falciparum.
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