Chemical composition and antimicrobial activity of the essential oils of the Amazon Guatteriopsis species

Isolation and identification of caryophyllene oxide (1), β-eudesmol (2), γ-eudesmol (3) and α-eudesmol (4) from the Guatteriopsis species are reported. The oils showed significant activities against Rhodococcus equi, Enterococcus hirae, Staphylococcus epidermides and Bacillus subtilis.