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Pàgina inicial > Articles > Articles publicats > New bioconjugated technetium and rhenium folates synthesized by transmetallation reaction with zinc derivatives |
Data: | 2021 |
Resum: | The zinc dithiocarbamates functionalized with folic acid 2 and 3 were synthesized with a simple straightforward method, using an appropriated folic acid derivative and a functionalized zinc dithiocarbamate (1). Zinc complexes 2 and 3 show very low solubilities in water, making them useful for preparing Tc-99m radiopharmaceuticals with a potentially high molar activity. Thus, the transmetallation reaction in water medium between the zinc complexes 2 or 3 and the cation fac-[ Tc(H O) (CO) ], in the presence of the monodentate ligand TPPTS, leads to the formation of the 2 + 1 complexes fac-[ Tc(CO) (SS)(P)] bioconjugated to folic acid (2 and 3). In spite of the low solubility of 2 and 3 in water, the reaction yield is higher than 95%, and the excess zinc reagent is easily removed by centrifugation. The Tc-99m complexes were characterized by comparing their HPLC with those of the homologous rhenium complexes (2 and 3) previously synthesized and characterized by standard methods. Preliminary in vivo studies with 2 and 3 indicate low specific binding to folate receptors. In summary, Tc-99m folates 2 and 3 were prepared in high yields, using a one-pot transmetallation reaction with low soluble zinc dithiocarbamates (>1 ppm), at moderate temperature, without needing a subsequent purification step. |
Ajuts: | Ministerio de Economía y Competitividad BIO2015-67358-C2-2-P Ministerio de Economía y Competitividad CTQ2015-70371-REDT Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-795 |
Drets: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. |
Llengua: | Anglès |
Document: | Article ; recerca ; Versió publicada |
Matèria: | Technetium ; Carbonyl ; Folic ; Transmetallation ; Radiopharmaceutical ; Rhenium |
Publicat a: | Molecules, Vol. 26, Núm. 8 (April 2021) , art. 2373, ISSN 1420-3049 |
15 p, 3.7 MB |