In an attempt to find a new class of antimicrobial agents, a series of biscoumarin (1–4) and dihydropyran (5 and 6) derivatives were prepared. These compounds were screened for their in vitro antibacterial activity against Staphylococcus aureus (S. aureus ATCC 29213), methicillin-resistant S. aureus (MRSA XJ 75302), vancomycin-intermediate S. aureus (Mu50 ATCC 700699), and USA 300 (Los Angeles County clone, LAC). There are two classical intramolecular O–H···O hydrogen bonds (HBs) in the structures of biscoumarins 1–4 and the corresponding total HB energy were further performed with the density functional theory (DFT) [B3LYP/6-31G*] method.
Research on Chemical Intermediates – Springer Journals
Published: Jan 6, 2015
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