Licoflavonol is a novel natural inhibitor of Salmonella T3SS, could be a promising candidate for novel type of anti-virulence drugs, it exhibits a strong inhibitory effect on the secretion of the SPI-1 effector proteins via regulating the transcription of the SicA/InvF genes, and the transportation of the effector protein SipC.

In this study, twenty prenylated flavonoids (1-20) were screened for their anti-T3SS activity, revealing that several analogs exhibited strong inhibitory effects on the secretion of Salmonella pathogenicity island 1 (SPI-1)-associated effector proteins without affecting the growth of bacteria and the secretion of the flagellar protein FliC. Among the flavonoids 1-20, Licoflavonol (20) exhibited a strong inhibitory effect on the secretion of the SPI-1 effector proteins via regulating the transcription of the SicA/InvF genes, and the transportation of the effector protein SipC.

60197-60-6

C20H18O6

354.35

(< 1 mg/ml refers to the product slightly soluble or insoluble )
Powder: -20°C for 3 years
In solvent: -80°C for 2 years