We report the 1 H NMR and 13 C NMR chemical shifts and J(H,H), J(H,F) and J(C,F) coupling constants of 13 2,4-diamino-10-methylpyrimido[4,5-b]-5-quinolone derivatives, some of them with moderate activity against Plasmodium falciparum in vitro. They were characterized and assigned on the basis of 1 H, 13 C and 13 C-1 H (short-and long-range) correlated spectra.
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