RT Journal Article T1 Dehydrohispanolone derivatives attenuate the inflammatory response through the modulation of inflammasome activation A1 Heras Polo, Beatriz De Las A1 González Cofrade, Laura A1 Cuadrado Berrocal, Irene A1 Oramas-Royo, Sandra A1 Amesty, Angel A1 Hortelano, Sonsoles A1 Estevez-Braun, Ana AB The NLRP3 inflammasome plays a critical role in inflammation-mediated human diseases and represents a promising drug target for novel anti-inflammatory therapies. Hispanolone is a labdane diterpenoid isolated from the aerial parts of Ballota species. This diterpenoid and some derivatives have demonstrated anti-inflammatory effects in classical inflammatory pathways. In the present study, a series of dehydrohispanolone derivatives (1−19) was synthesized, and their anti-inflammatory activities toward NLRP3 inflammasome activation were evaluated. The structures of the dehydrohispanolone analogues produced were elucidated by NMR spectroscopy and mass spectrometry. Four derivatives significantly inhibited IL-1β secretion, with 15 and 18 being the most active (IC50 = 18.7 and 13.8 μM, respectively). Analysis of IL-1β and caspase-1 expression revealed that the new diterpenoids 15 and18 are selective inhibitors of the NLRP3 inflammasome, reinforcing the previously demonstrated anti-inflammatory properties ofhispanolone derivatives PB ACS Publications YR 2020 FD 2020 LK https://hdl.handle.net/20.500.14352/118891 UL https://hdl.handle.net/20.500.14352/118891 LA eng NO González-Cofrade L, Oramas-Royo S, Cuadrado I, Amesty Á, Hortelano S, Estevez-Braun A, et al. Dehydrohispanolone Derivatives Attenuate the Inflammatory Response through the Modulation of Inflammasome Activation. J Nat Prod 2020;83:2155–64. https://doi.org/10.1021/acs.jnatprod.0c00200. NO Ministerio de Ciencia, Innovacion y Universidades (MICIU) NO Agencia Canaria de Investigacion, ́Innovacion y Sociedad de la Informacion (ACIISI) NO Instituto de Salud Carlos III DS Docta Complutense RD 7 jun 2025