Figure 1. Ligand structures and synthesis.
a) Structures of a generic AHL, OHHL (1) (the natural autoinducer ligand of V. fischeri), and selected known synthetic inhibitors of LuxR or other R protein function (2–5). b) Solid-phase synthetic route to PHL library 11. DIC = N,N′-diisopropyl-carbodiimide. HOBt = N-hydroxybenzotriazole. µW = temperature-controlled microwave irradiation.