Discovery and Development of a Small Molecule Library with Lumazine Synthase Inhibitory Activity

ACS Citation

Talukdar, A.; Breen, M.E.; Bacher, A.; Illarionov, B.; Fischer, M.; Georg, G.; Qi-Zhuang Ye; Cushman, M. Discovery and Development of a Small Molecule Library with Lumazine Synthase Inhibitory Activity. J. Org. Chem. 2009, 74, 15, 5123-5134.

Abstract

(E)-5-Nitro-6-(2-hydroxystyryl)pyrimidine-2,4(1H,3H)-dione (9) was identified as a novel inhibitor of Schizosaccharomyces pombe lumazine synthase by high-throughput screening of a 100000 compound library. The Ki of 9 vs Mycobacterium tuberculosis lumazine synthase was 95 μM. Compound 9 is a structural analogue of the lumazine synthase substrate 5-amino-6-(d-ribitylamino)-2,4-(1H,3H)pyrimidinedione (1). This indicates that the ribitylamino side chain of the substrate is not essential for binding to the enzyme. Optimization of the enzyme inhibitory activity through systematic structure modification of the lead compound 9 led to (E)-5-nitro-6-(4-nitrostyryl)pyrimidine-2,4(1H,3H)-dione (26), which has a Ki of 3.7 μM vs M. tuberculosis lumazine synthase.

Source Name

The Journal of Organic Chemistry

Publication Date

6-24-2009

Volume

74

Issue

15

Page(s)

5123-5134

Document Type

Citation

Citation Type

Article

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