A New Series of <i>N</i>-[2,4-Dioxo-6-<scp>d</scp>-ribitylamino-1,2,3,4-tetrahydropyrimidin-5-yl]oxalamic Acid Derivatives as Inhibitors of Lumazine Synthase and Riboflavin Synthase: Design, Synthesis, Biochemical Evaluation, Crystallography, and Mechanistic Implications
catalyzed by lumazinesynthase. Three metabolically stable analogues of the hypothetical intermediate proposed to arise after phosphate elimination in the lumazine synthase-catalyzed reaction were synthesized and evaluated as lumazinesynthase inhibitors. All three intermediate analogues were inhibitors of Mycobacterium tuberculosis lumazinesynthase, Bacillus subtilis lumazinesynthase, and Schizosaccharomyces