RT journal article T1 Diterpenoids from the Brown Alga Rugulopteryx okamurae and Their Anti-Inflammatory Activity A1 Cuevas, Belén A1 Arroba Espinosa, Ana Isabel A1 Reyes Jiménez, Carolina de los A1 Gómez Jaramillo, María Laura A1 González Montelongo, María del Carmen A1 Zubía Mendoza, Eva A2 BiomedicinaBiotecnología y Salud Pública A2 Química Orgánica K1 diterpenoids K1 brown algae K1 Rugulopteryx okamurae K1 anti-inflammatory K1 nitric oxide K1 cytokine K1 microglia K1 macrophages K1 invasive algae AB 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, thechemical 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 thenew compounds were established by spectroscopic means. Compound 1 exhibits an unprecedentedditerpenoid skeleton featuring a bridged tricyclic undecane system. Compounds 2–10 belong to thesecospatane class of diterpenoids and differ by the oxygenated functions that they contain. In antiinflammatoryassays, the new diterpenoid 1 and the secospatanes 5 and 10 significantly inhibited theproduction of the inflammatory mediator NO in LPS-stimulated microglial cells Bv.2 and macrophagecells RAW264.7. Moreover, compounds 1 and 5 were found to strongly inhibit the expression of Nos2and the pro-inflammatory cytokine Il1b in both immune cell lines. PB MDPI SN 1660-3397 YR 2021 FD 2021-12 LK http://hdl.handle.net/10498/26422 UL http://hdl.handle.net/10498/26422 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 05-nov-2026