RT Journal Article T1 Enantioselective photocatalytic synthesis of bicyclo[2.1.1]hexanes as ortho-disubstituted benzene bioisosteres with improved biological activity A1 Garrido García, P. A1 Quirós, I. A1 Milán Rois, P. A1 Ortega Gutiérrez, Silvia A1 Martín-Fontecha Corrales, María Del Mar A1 Campos, L. A. A1 Somoza, A. A1 Fernández López, Israel A1 Rigotti, T. A1 Tortosa, M. AB 1,5-Disubstituted bicyclo[2.1.1]hexanes are bridged scaffolds with well-defined exit vectors that are becoming increasingly popular building blocks in medicinal chemistry because they are saturated bioisosteres of ortho-substituted phenyl rings. Here we have developed a Lewis-acid-catalysed [2 + 2] photocycloaddition to obtain these motifs as enantioenriched scaffolds, providing an efficient approach for their incorporation in a variety of drug analogues. Retention of the biological activity of the bicyclo[2.1.1]hexane-containing analogues in the specific proteins targeted by the original drugs has confirmed the suitability of this moiety to serve as a bioisostere of ortho-substituted phenyl rings. Moreover, we have studied the potential of the different enantiomers of the drug analogues to selectively induce cytotoxicity in a panel of tumour cell lines, observing markedly differential effects for the two enantiomers and a substantial improvement over the corresponding sp2-based drugs. This showcases that the control of the absolute configuration and tridimensionality of the drug analogue has a large impact on its biological properties. PB Springer Nature YR 2025 FD 2025-02-25 LK https://hdl.handle.net/20.500.14352/120135 UL https://hdl.handle.net/20.500.14352/120135 LA eng NO Garrido-García, Pablo, et al. «Enantioselective Photocatalytic Synthesis of Bicyclo[2.1.1]Hexanes as Ortho-Disubstituted Benzene Bioisosteres with Improved Biological Activity». Nature Chemistry, vol. 17, n.o 5, mayo de 2025, pp. 734-45. DOI.org (Crossref), https://doi.org/10.1038/s41557-025-01746-7. NO Comisión Europea ERC NO Marie Curie Postdoctoral Fellowship a T.R. NO Ministerio de Ciencia, Innovación y Universidades de España (MICIU) NO Agencia Estatal de Investigación (AEI) DS Docta Complutense RD 17 may 2025