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Bioconjug Chem. 2004 Jul-Aug;15(4):923-6.

Carbohydrate conjugates for molecular imaging and radiotherapy: 99mTc(I) and 186Re(I) tricarbonyl complexes of N-(2'-Hydroxybenzyl)-2-amino-2-deoxy-D-glucose.

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  • 1Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, V6T 1Z1, Canada.

Abstract

An approach to a new class of potential radiopharmaceuticals is demonstrated by the labeling of a glucosamine derivative with the tricarbonyls of 99mTc and 186Re. The proligand HL2 (N-(2'-hydroxybenzyl)-2-amino-2-deoxy-D-glucose) was produced by hydrogenation of the corresponding Schiff base and reacted with [NEt4]2[Re(CO)3Br3] to form the neutral complex [(L2)Re(CO)3] in 40% yield. 1H and 13C NMR spectra indicate that the [Re(CO)3] core is bound in a tridentate fashion via the amino N, phenolato O, and C-3 hydroxyl O atoms of the ligand. At the tracer-level, labeling of HL2 with [99mTc(CO)3(H2O)3]+ and [186Re(CO)3(H2O)3]+ was achieved in aqueous conditions in 95 +/- 2% and 94 +/- 3% average radiochemical yields, respectively.

PMID:
15264883
[PubMed - indexed for MEDLINE]
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