Antimicrobial resistance is one of the major and growing concerns in hospital- and community acquired infections, and new antimicrobial agents are therefore urgently required. It was reported that oxidative stress could contribute to the selection of resistant bacterial strains, since reactive oxygen species (ROS) revealed to be an essential driving force. In the present work 4-alkylidene-azetidinones, a new class of antibacterial agents, were functionalized with phytochemical polyphenolic acids such as protocatechuic, piperonyl, caffeic, ferulic, or sinapic acids and investigated as dual target antibacterial-antioxidant compounds. The best candidates showed good activities against multidrug resistant clinical isolates of MRSA (MICs 2â8 μg/mL). Among the new compounds, two revealed the best antioxidant capacity with TEAC-DPPH and TEAC-ABTS being significantly more active than Trolox®.
4-Alkyliden-azetidinones modified with plant derived polyphenols: Antibacterial and antioxidant properties / Giacomini, Daria; Musumeci, Rosario; Galletti, Paola; Martelli, Giulia; Assennato, Lorenzo; Sacchetti, Gianni; Guerrini, Alessandra; Calaresu, Enrico; Martinelli, Marianna; Cocuzza, Clementina. - In: EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY. - ISSN 0223-5234. - STAMPA. - 140:(2017), pp. 604-614. [10.1016/j.ejmech.2017.09.048]
4-Alkyliden-azetidinones modified with plant derived polyphenols: Antibacterial and antioxidant properties
Giacomini, Daria;Galletti, Paola;Martelli, Giulia;
2017
Abstract
Antimicrobial resistance is one of the major and growing concerns in hospital- and community acquired infections, and new antimicrobial agents are therefore urgently required. It was reported that oxidative stress could contribute to the selection of resistant bacterial strains, since reactive oxygen species (ROS) revealed to be an essential driving force. In the present work 4-alkylidene-azetidinones, a new class of antibacterial agents, were functionalized with phytochemical polyphenolic acids such as protocatechuic, piperonyl, caffeic, ferulic, or sinapic acids and investigated as dual target antibacterial-antioxidant compounds. The best candidates showed good activities against multidrug resistant clinical isolates of MRSA (MICs 2â8 μg/mL). Among the new compounds, two revealed the best antioxidant capacity with TEAC-DPPH and TEAC-ABTS being significantly more active than Trolox®.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
