The manuscript pertains to the synthesis of urea/oxalamide tethered b-lactam-7-chloroquinoline con-jugates with well modulated chain lengths and their antimalarial evaluation. The results reveal the dependence of activity profiles on the N-1 substituent of the b-lactam ring, the nature of the linker as well as the length of the alkyl chain. The most potent of the tested compounds showed an IC50 of 34.97 nM against chloroquine resistant W2 strain of Plasmodium falciparum.
