Synthesis and characterization of fluorescent cobalamin (CobalaFluor) derivatives for imaging
C C Smeltzer1, M J Cannon, P R Pinson
1Department of Chemistry, University of Utah, 315 S. 1400 E., Salt Lake City, Utah 84112-0850, USA.
Organic Letters
|March 27, 2001
Abstract:
Fluorescent derivatives of cobalamin have been prepared by linking fluorophores to cobalamin through a propylamide spacer. Fluorescein, naphthofluorescein, and Oregon Green derivatives have been prepared in good yield by reaction of the fluorophore NHS-ester with beta-(3-aminopropyl)cobalamin to form fluorescent cobalamin conjugates (CobalaFluors) that are potentially suitable for the in vitro and in vivo imaging of transcobalamin receptors on cancer cells.
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