Abstract:
<p align="justify"> Lichens collected in Mato Grosso do Sul, Brazil was analyzed to their secondary metabolites. The compounds isolated were tested against the phytopathogenic fungus Cladosporium sphaerospermum, using a bioautography test. Diffractaic acid, atranorin/chloroatranorin, usnic acid, and the technical artifact product ethyl orselinate inhibited the fungus growth </p>