RT Journal Article T1 Diterpenoids from the Brown Alga Rugulopteryx okamurae and Their Anti-Inflammatory Activity A1 Cuevas, Belén A1 Arroba, Ana I. A1 de los Reyes, Carolina A1 Gómez-Jaramillo, Laura A1 González-Montelongo, M. Carmen A1 Zubía, Eva K1 Diterpenoids K1 Brown algae K1 Rugulopteryx okamurae K1 Anti-inflammatory K1 Nitric oxide K1 Cytokine K1 Microglia K1 Macrophages K1 Invasive algae K1 Diterpenos K1 Phaeophyta K1 Algas marinas K1 Antiinflamatorios K1 Óxido nítrico K1 Citocinas K1 Macrófagos 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, 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 anti-inflammatory 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 RAW 264.7. 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. PB MDPI YR 2021 FD 2021-11-27 LK http://hdl.handle.net/10668/4521 UL http://hdl.handle.net/10668/4521 LA en NO Cuevas B, Arroba AI, de Los Reyes C, Gómez-Jaramillo L, González-Montelongo MC, Zubía E. Diterpenoids from the Brown Alga Rugulopteryx okamurae and Their Anti-Inflammatory Activity. Mar Drugs. 2021 Nov 27;19(12):677 DS RISalud RD Apr 10, 2025