Technetium and Rhenium - Coordination Chemistry and Nuclear Medical Applications

نویسندگان

  • Ulrich Abram
  • Roger Alberto
چکیده

Compostos de coordenação do elemento radioativo tecnécio são empregados para diagnóstico em medicina nuclear, sendo vários complexos do nuclídeo emissor de radiação γ Tc usados rotineiramente na obtenção de imagens de órgãos. As tendências modernas da química radiofarmacêutica concentram-se na marcação de moléculas biologicamente ativas tais como peptídeos, esteróides ou outras espécies com receptor específico. Por esta razão é necessário conhecer melhor a química de coordenação deste metal de transição artificial, especialmente no que diz respeito às esferas de coordenação estáveis ou inertes que possibilitam o acoplamento a biomoléculas, de acordo com a estratégia de formação de bioconjugados. O papel dominante dos compostos de tecnécio nos procedimentos de diagnóstico sugere o uso dos isótopos do rênio emissores de radiação β, Re e Re, para fins terapêuticos em medicina nuclear. O isótopo Re é facilmente obtido a partir do isótopo W, e as abordagens sintéticas empregadas na química do tecnécio podem ser investigadas para a obtenção dos complexos de rênio.

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تاریخ انتشار 2006