Issue 42, 2009

Glucosamine conjugates bearing N,N,O-donors: potential imaging agents utilizing the [M(CO)3]+ core (M = Re, Tc)

Abstract

The design rationale, synthesis and radiolabeling evaluation of four glucosamine conjugated ligands for the [99mTc(CO)3]+ core is described. The capability to bind the tricarbonyl core is initially demonstrated using the cold surrogate [Re(CO)3]+. The four compounds are competent chelates in binding [99mTc(CO)3]+ as labeling studies show, with yields ranging from 79 to 96% and the resulting complexes showing stability in the presence of competing chelates for 24 h at 37 °C. The rhenium complexes were tested for hexokinase-catalysed phosphorylation, and the technetium complexes were tested for GLUT-1 mediated cell uptake - they showed a small amount of uptake but it was not glucose dependent, suggesting that it was not via the GLUT-1 transporters.

Graphical abstract: Glucosamine conjugates bearing N,N,O-donors: potential imaging agents utilizing the [M(CO)3]+ core (M = Re, Tc)

Supplementary files

Article information

Article type
Paper
Submitted
16 Jul 2009
Accepted
04 Sep 2009
First published
25 Sep 2009

Dalton Trans., 2009, 9216-9227

Glucosamine conjugates bearing N,N,O-donors: potential imaging agents utilizing the [M(CO)3]+ core (M = Re, Tc)

M. L. Bowen, N. C. Lim, C. B. Ewart, R. Misri, C. L. Ferreira, U. Häfeli, M. J. Adam and C. Orvig, Dalton Trans., 2009, 9216 DOI: 10.1039/B914310F

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