An efficient synthesis of some 6-substituted 4,8-diaza-3,3,9,9- tetramethylundeca-2,10-dione dioximes (propylene amine oximes, PnAOs): Ligands for 99mTc complexes used in structure distribution relationship (SDR) studies
摘要:
Technetium complexes of the ligand PnAO [4,8-diaza-3,3,9,9-fetramethylundeca-2,10-dione dioximes (3)] are of interest as commercial radiopharmaceuticals. In general, PnAOs are synthesized by alkylation of a propylenediamine derivative with 3-chloro-3-methyl-2-nitrosobutane (2). This alkylation reaction proved to be low yielding. With modestly bulky substituents at the 2-position of 1,3-diaminopropane, little or none of the required PnAO was obtained. As a result, an alternative approach of the synthesis of PnAO was developed. This method involved the alkylation of the propylenediamine with 3-bromo-3-methylbutan-2-one (18) followed by oximation of the resulting diamine-diketone (19). By this method, PnAOs were prepared in goad yield, even with bulky C-2 substituents. Fourteen PnAO derivatives were prepared by this method. We also describe the syntheses of several new propylenediamine derivatives.
An efficient synthesis of some 6-substituted 4,8-diaza-3,3,9,9- tetramethylundeca-2,10-dione dioximes (propylene amine oximes, PnAOs): Ligands for 99mTc complexes used in structure distribution relationship (SDR) studies
摘要:
Technetium complexes of the ligand PnAO [4,8-diaza-3,3,9,9-fetramethylundeca-2,10-dione dioximes (3)] are of interest as commercial radiopharmaceuticals. In general, PnAOs are synthesized by alkylation of a propylenediamine derivative with 3-chloro-3-methyl-2-nitrosobutane (2). This alkylation reaction proved to be low yielding. With modestly bulky substituents at the 2-position of 1,3-diaminopropane, little or none of the required PnAO was obtained. As a result, an alternative approach of the synthesis of PnAO was developed. This method involved the alkylation of the propylenediamine with 3-bromo-3-methylbutan-2-one (18) followed by oximation of the resulting diamine-diketone (19). By this method, PnAOs were prepared in goad yield, even with bulky C-2 substituents. Fourteen PnAO derivatives were prepared by this method. We also describe the syntheses of several new propylenediamine derivatives.
Rhenium and technetium complexes containing a hypoxia-localizing moiety
申请人:——
公开号:US20020054853A1
公开(公告)日:2002-05-09
Novel methods, processes and metal complexes attached to a hypoxia-localizing moiety comprising
a metal, preferably radionuclide of rhenium or technetium;
a hypoxia-localizing moiety; and,
a complexing ligand, wherein said ligand and said radionuclide combined have cell membrane permeabilities greater than that of sucrose, are disclosed.
RHENIUM AND TECHNETIUM COMPLEXES CONTAINING A HYPOXIA-LOCALIZING MOIETY
申请人:——
公开号:US20040010127A1
公开(公告)日:2004-01-15
Novel methods, processes and metal complexes attached to a hypoxia-localizing moiety comprising
a metal, preferably radionuclide of rhenium or technetium;
a hypoxia-localizing moiety; and,
a complexing ligand, wherein said ligand and said radionuclide combined have cell membrane permeabilities greater than that of sucrose, are disclosed.