Two flavanones named (2S)-7-Hydroxy-5-methoxy-6,8-dimethyl flavanone (1), (S)-5,7-dihydroxy-6,8-dimethyl-flavanone (2), along with known chalcone, namely, (E)-2',4'- dihydroxy-6'-methoxy-3',5'-dimethylchalcone (3) and two triterpenoids, namely, betulinic and ursolic acids (4 and 5), were isolated from the leaves of Syzygium campanulatum Korth (Myrtaceae). The structures of compounds (1 and 2) w...

Staphylococcus aureus (S.aureus) resistance, considered a dilemma for the clinical treatment of this bacterial infection, is becoming increasingly intractable. Novel anti-virulence strategies will undoubtedly provide a path forward in combating these resistant bacterial infections. Sortase A (SrtA), an enzyme responsible for anchoring virulence-related surface proteins, and alpha-hemolysin (Hla...

Chalcones considered as the precursor of flavonoids and isoflavonoids abundantly found in plants, and have also been shown to display a diverse array of pharmacological activities. This review is complementary to earlier reviews and covers more recent report of antimicrobial activity of chalcones as well as its important role as an intermediate for the synthesis of different synthetic molecules...

Flavylium/Chalcone-based molecular switches comprise features such as pH-gated photochromism and fluorescence properties that make them attractive for many applications, ranging from stimuli-responsive materials to photopharmacology. However, in contrast other common photoswitches, the application of flavylium compounds these areas remains largely unexplored. Among possible reasons, this may be...

2',3'-Dihydroxy-4,4'-dimethoxychalcone (1) and 2',3',4-trihydroxy-4'-methoxy-chalcone, two new chalcones, were isolated from propolis from El Salvador. The compounds showed significant antibacterial and antifungal activity and moderate toxicity to Artemia salina nauplii.

Background: Streptococcus mutans is one of the most important microorganisms in tooth decay. Sortase A (SrtA) S. responsible for attachment bacteria to host cell and biofilm formation. Therefore, it seems necessary investigate inhibitors this enzyme prevent dental caries. Chalcones are always interest medical community due their wide range biological activities. Many studies have reported that ...