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Beilstein J. Org. Chem. 2018, 14, 2627–2645, doi:10.3762/bjoc.14.241
Graphical Abstract
Figure 1: The four quorum sensing systems in P. aeruginosa las, iqs, rhl, and pqs. Abbreviations: OdDHL, N-(3...
Figure 2: Schematic overview of the PQS biosynthesis and involvement of related metabolites and PqsE in virul...
Figure 3: Anthranilic acid (1) and derivatives thereof (2–4).
Figure 4: Crystal structure of 6-FABA-AMP in complex with PqsA.
Figure 5: Structures of substrate mimetic PqsA inhibitors.
Figure 6: Structures and characteristics of prominent classes of PqsD inhibitors.
Figure 7: Comparison of docking poses of three prototypic PqsD inhibitors: benzamidobenzoic acid derivative 12...
Figure 8: Structures and characteristics of hits against PqsD identified through different methods.
Figure 9: HHQ and PQS analogues as PqsD inhibitors and chemical probe used for screening.
Figure 10: Structure of PqsD-targeting biofilm inhibitor derived from linezolid.
Figure 11: Fragment-based PqsE-inhibitors 24–26.
Figure 12: PqsE co-crystal structures. (A) native product 2-ABA; (B–D) hit fragments 24–26.
Figure 13: Structurally diverse PqsBC-inhibitors 27–30.
Figure 14: Native PqsR ligand HHQ (31) which is converted into PQS (32) by PqsH and synthetic inhibitors 33 an...
Figure 15: Quinazolinone inhibitor 36 (QZN).
Figure 16: Crystal structure of QZN (36) in complex with PqsRCBD.
Figure 17: Structures of best fitting compounds 37–40 obtained from docking studies.
Figure 18: Initial hit 21 and optimized compound 42 (M64).
Figure 19: Co-crystal structure of M64 (42) with PqsRLBD.
Figure 20: M64 (42) as the starting point for further optimization leading to 43, which was further modified a...
Figure 21: Hit fragments from the benzamide (47–48) and oxadiazole class (49–51).
Figure 22: Structures of dual inhibitors 52–55.
Figure 23: Sulfonyl pyrimidines 56–58 acting as dual PqsD/PqsR inhibitors.