Antibacterial Triketone-Phloroglucinol-Triketone Adducts from Myrtus communis

Myrtucyclitones A-C ((+)-and (-) -1 - 3 ), three pairs of new triketone-phloroglucinol-triketone hybrids were isolated from the plant Myrtus communis . Their structures with absolute configurations were established by NMR analysis and chemical calculations. Myrtucyclitones B and C exhibited remarkable antibacterial effect.

Keywords: Myrtus communis; antibacterial effect; triketone-phloroglucinol-triketone adduct.