@misc{10498/26422, year = {2021}, month = {12}, url = {http://hdl.handle.net/10498/26422}, abstract = {Brown algae of the Family Dictyotaceae produce an array of structurally diverse terpenoids, whose biomedical potential in the anti-inflammatory area has been scarcely explored. Herein, the chemical study of the alga Rugulopteryx okamurae has led to the isolation of ten new diterpenoids: rugukadiol A (1), rugukamurals A–C (2–4), and ruguloptones A–F (6–10). The structures of the new compounds were established by spectroscopic means. Compound 1 exhibits an unprecedented diterpenoid skeleton featuring a bridged tricyclic undecane system. Compounds 2–10 belong to the secospatane class of diterpenoids and differ by the oxygenated functions that they contain. In antiinflammatory assays, the new diterpenoid 1 and the secospatanes 5 and 10 significantly inhibited the production of the inflammatory mediator NO in LPS-stimulated microglial cells Bv.2 and macrophage cells RAW264.7. Moreover, compounds 1 and 5 were found to strongly inhibit the expression of Nos2 and the pro-inflammatory cytokine Il1b in both immune cell lines.}, publisher = {MDPI}, keywords = {diterpenoids}, keywords = {brown algae}, keywords = {Rugulopteryx okamurae}, keywords = {anti-inflammatory}, keywords = {nitric oxide}, keywords = {cytokine}, keywords = {microglia}, keywords = {macrophages}, keywords = {invasive algae}, title = {Diterpenoids from the Brown Alga Rugulopteryx okamurae and Their Anti-Inflammatory Activity}, doi = {10.3390/md19120677}, author = {Cuevas, Belén and Arroba Espinosa, Ana Isabel and Reyes Jiménez, Carolina de los and Gómez Jaramillo, María Laura and González Montelongo, María del Carmen and Zubía Mendoza, Eva}, }