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. 2013 Mar 13;18(3):3266-78.
doi: 10.3390/molecules18033266.

Design, synthesis and biological evaluation of N-sulfonyl homoserine lactone derivatives as inhibitors of quorum sensing in Chromobacterium violaceum

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Design, synthesis and biological evaluation of N-sulfonyl homoserine lactone derivatives as inhibitors of quorum sensing in Chromobacterium violaceum

Mingming Zhao et al. Molecules. .

Abstract

A novel series of N-sulfonyl homoserine lactone derivatives 5a-l has been designed, synthesized and evaluated for quorum sensing inhibitory activities towards violacein production. Of the compounds synthesized, compound 5h was found to possess an excellent level of enantiopurity (99.2% e.e.). The results indicated that compounds bearing an ortho substituent on their phenyl ring exhibited excellent levels of inhibitory activity against violacein production. Compounds 5h and 5k in particular, with IC₅₀ values of 1.64 and 1.66 µM, respectively, were identified as promising lead compounds for further structural modification.

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Figures

Figure 1
Figure 1
Structures of C10-HSL, CL and target compounds 5al.
Scheme 1
Scheme 1
Synthesis of target compounds.
Figure 2
Figure 2
Antibacterial spot tests of compounds 5h,k.
Figure 3
Figure 3
Molecular model of CviR with C6-HSL and compound 5h bound to the active site.

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