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Updated: Aug 1, 2026

Microwave-assisted Intramolecular Dehydrogenative Diels-Alder Reactions for the Synthesis of Functionalized Naphthalenes/Solvatochromic Dyes
Published on: April 1, 2013
Chromophore-modified bis-naphthalimides: synthesis and antitumor activity of bis-dibenz[de,h]isoquinoline-1,3-diones
M F Braña1, J M Castellano, D Perron
1Departamento de Quimica Orgánica y Farmaceútica, Universidad San Pablo CEU, Madrid, Spain.
Abstract:
The bis-dibenz[de,h]isoquinoline-1,3-diones are a new series of antitumor agents that consist of two chromophores bridged by an alkylamino linker. In the present study we have explored the effect produced by the presence of two dibenz[de,h]isoquinoline-1,3-dione moieties with different polyamine chains on cellular cytotoxicity. Bis-dibenz[de,h]isoquinoline-1,3-diones with the bridge (CH2)2-NH-(CH2)n-NH-(CH2)2, where n = 2-5, showed optimum cytotoxicity with IC50's around 10 nM. Compound 16, which has the (CH2)2-NH-(CH2)3-NH-(CH2)2 bridge, altered DNA mobility and topoisomerase I and II activity at approximately 5 microM. When tested in vivo, compound 16 increased the median survival time of mice implanted with M5076 with an optimum %T/C of 154% and produced cures in 50% of mice implanted with Lox melanoma.
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