RT Journal Article T1 Design, synthesis, HER2 inhibition and anticancer evaluation of new substituted 1,5-dihydro-4,1-benzoxazepines A1 Cruz-López, Olga A1 Ner, Matilde A1 Nerín-Fonz, Francho A1 Jiménez-Martínez, Yaiza A1 Araripe, David A1 Marchal, Juan A. A1 Boulaiz, Houria A1 Gutiérrez-de-Terán, Hugo A1 Campos, Joaquín M. A1 Conejo-García, Ana K1 Antitumour K1 Pyroptosis K1 HER2 K1 Receptor K1 Molecular modelling K1 Benzoxazepines K1 Cancer cell line K1 Antineoplásicos K1 Piroptosis K1 Genes erbB-2 K1 Modelos moleculares K1 Línea celular tumoral AB A series of 11 new substituted 1,5-dihydro-4,1-benzoxazepine derivatives was synthesised to study the influence of the methyl group in the 1-(benzenesulphonyl) moiety, the replacement of the purine by the benzotriazole bioisosteric analogue, and the introduction of a bulky substituent at position 6 of the purine, on the biological effects. Their inhibition against isolated HER2 was studied and the structure-activity relationships have been confirmed by molecular modelling studies. The most potent compound against isolated HER2 is 9a with an IC50 of 7.31 µM. We have investigated the effects of the target compounds on cell proliferation. The most active compound (7c) against all the tumour cell lines studied (IC50 0.42-0.86 µM) does not produce any modification in the expression of pro-caspase 3, but increases the caspase 1 expression, and promotes pyroptosis. PB Taylor & Francis SN 1475-6366 YR 2021 FD 2021-07-12 LK http://hdl.handle.net/10668/4437 UL http://hdl.handle.net/10668/4437 LA en NO Cruz-López O, Ner M, Nerín-Fonz F, Jiménez-Martínez Y, Araripe D, Marchal JA, et al. Design, synthesis, HER2 inhibition and anticancer evaluation of new substituted 1,5-dihydro-4,1-benzoxazepines. J Enzyme Inhib Med Chem. 2021 Dec;36(1):1553-1563 DS RISalud RD Apr 10, 2025