Structure elucidation and antimicrobial activities of five compounds from Artemisia integrifolia L

Abstract A new compound, integracid ( 1 ), together with four known compounds were isolated from the dichloromethane (CH 2 Cl 2 ) extract from Artemisia integrifolia L. The structures of compounds ( 1–5 ) were elucidated by spectroscopic methods, including ultraviolet, infrared (IR), high resolution-electrospray ionization-mass spectrometry (HR-ESI-MS) and extensive one-dimensional (1D) and two-dimensional (2D) nuclear magnetic resonance (NMR) techniques, and by comparison with data reported in the references. Antibacterial activities of the compounds were evaluated against various bacteria.