Montenegro, IvánIvánMontenegroElizabeth SánchezEnrique WernerPatricio GodoyYusser OlguínNelson CaroNicole EhrenfeldAlejandro Madrid2025-12-082025-12-082019-01-2810.1186/s13065-019-0516-82-s2.0-85075622228https://cris-uv-2.scimago.es/handle/123456789/8178WOS:000460263200001The resinous exudates from Escallonia illinita by products was characterized by FT-IR, NMR and HRMS. Six compounds were isolated and identified as follows: 1,5-diphenylpent-1-en-3-one (1), 4-(5-hydroxy-3,7-dimethoxy-4-oxo-4Hchromen-2-yl)phenyl acetate (2), pinocembrin (3), kaempferol 3-O-methylether (4), (3S,5S)-(E)-1,7-diphenylhept-1-ene-3,5-diol (5) and the new diarylheptanoid (3S,5S)-(E)-5-hydroxy-1,7-diphenylhept-1-en-3-yl acetate (6). The anti-oomycete potential of the resinous exudate, as well as the main compounds, was tested in vitro against Saprolegnia parasitica and Saprolegnia australis. The resinous exudate showed a strong anti-oomycete activity. In addition, the compounds 6, 1 and 3 demonstrated significant inhibition of Saprolegnia strains development. These findings strongly suggest that E. illinita is a potential biomass that could be used as a natural anti-oomycete product.enacceso abiertoChemistry, MultidisciplinaryChemistryarticle