Patent ID: 7498292

Claim:
An isolated autoinducer agonist or antagonist compound having the structure wherein X 2 and X 3 are independently selected from the group consisting of H, OH, SH, OR 1 , SR 1 , NH 2 , NHR 1 , NR 1 R 1 , COOR 1 , alkyl, cycloalkyl, alkenyl, alkynyl, aryl, heteroaryl, heteroalicyclic, carbonyl, cyano, nitro, and halogen; when adjacent X 2 and X 3 substituents are combined, the combination forms a cycloalkyl of 3 to 8 carbon atoms, a heterocycloalkyl of 3 to 8 members comprising carbon atoms and from 1 to 6 heteroatoms selected from the group consisting of N, S, and O, and an aryl or heteroaryl ring having 3 to 8 members, wherein R 1 and R 2 are selected from the group consisting of H, alkyl, cycloalkyl, alkenyl, aryl, heteroaryl, carbonyl, and sulfonyl, and wherein R is selected from the group consisting of wherein q is 1 to 14, X 4 is OH, NH 2 , or SH and X 5 is H, or X 4 is H and X 5 is OH, NH 2 , or SH, wherein the compound has autoinducer agonist or antagonist activity.