Thiazolopyrimidine Inhibitors of 2‐Methylerythritol 2,4‐Cyclodiphosphate Synthase (IspF) from Mycobacterium tuberculosis and Plasmodium falciparum

A library of 40 000 compounds was screened for inhibitors of 2‐methylerythritol 2,4‐cyclodiphosphate synthase (IspF) protein from Arabidopsis thaliana using a photometric assay. A thiazolopyrimidine derivative resulting from the high‐throughput screen was found to inhibit the IspF proteins of Mycobacterium tuberculosis, Plasmodium falciparum, and A. thaliana with IC50 values in the micromolar range. Synthetic efforts afforded derivatives that inhibit IspF protein from M. tuberculosis and P. falciparum with IC50 values in the low micromolar range. Several compounds act as weak inhibitors in the P. falciparum red blood cell assay.

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