Multifaceted Study on a Cytochalasin Scaffold: Lessons on Reactivity, Multidentate Catalysis, and Anticancer Properties
Résumé
We report an intramolecular Diels-Alder reaction efficiently accelerated by Schreiner's thiourea, to build a functionalized cytochalasin scaffold (periconiasin series) amenable to biological purpose. DFT calculation highlighted a unique multidentate cooperative hydrogen bonding in this catalysis. The deprotection end-game afforded a collection of diverse structures and showed the peculiar reactivity of the Diels-Alder cycloadducts upon functionalization. Biological studies revealed strong cytotoxicity of a few compounds on breast cancer cell lines, while preserving actin polymerization.
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