Dual Reactivity Pattern of Allenolates “On Water”: The Chemical Basis for Efficient Allenolate-Driven Organocatalytic Systems
作者:David González-Cruz、David Tejedor、Pedro de Armas、Fernando García-Tellado
DOI:10.1002/chem.200700227
日期:2007.6.4
A study of the reactivitypattern associated with zwitterionic allenolates "on water" is reported. This study establishes the chemicalbasis for two organocatalyzed allenolate-driven reaction networks operating "on water". The first one is a chemodifferentiating three building block (ABB') three-component reaction (ABB' 3CR) manifold comprising terminal alkynoates and aldehydes. The manifold produces
Mitotic Arrest Induced by a Novel Family of DNA Topoisomerase II Inhibitors
作者:Leticia G. León、Carla Ríos-Luci、David Tejedor、Eduardo Pérez-Roth、Juan C. Montero、Atanasio Pandiella、Fernando García-Tellado、José M. Padrón
DOI:10.1021/jm100155y
日期:2010.5.13
A small structure-focused library of propargylic enol ethers was prepared by means of a modular and efficient chemodifferentiating organocatalyzed multicomponent reaction. The most active compound (GI(50) 0.25 mu M) against solid tumor cells was selected as lead. Cell cycle analysis and immunoblotting demonstrated arrest at the metaphase, pointing out human topoisomerase II as plausible molecular target. In vitro assays were carried out, showing that the lead behaves as a catalytic inhibitor of the enzyme.