A nucleophilic radiofluorination of methyl 3,4-0-isopropylidene-2-0-(trif luoromethanesulfonyl) -6-O-trityl-/3-D-talopyranoside (1) with aninopolyether Hydrolysis of 2 with 6N HCl followed by passage through an ion retardation resin column and a neutral alumina column gave 2-deoxy-2-[18F1 f luoro-
Preparation and characterization of 2-deoxy-2-[18F] fluoro-D-galactose
โ Scribed by Franz Oberdorfer; Birgitt-C. Traving; Wolfgang Maier-Borst; William E. Hull
- Publisher
- John Wiley and Sons
- Year
- 1988
- Tongue
- French
- Weight
- 692 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0022-2135
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โฆ Synopsis
SUlMARY 2-Deoxy-2-[1eFlfluoro-D-galactose was prepared using gaseous [ ' a F] acetyl hypofluorite or [ l a FIFz and tri-0-acetyl-0-galactal as substrate. The product was obtained in a surprisingly high epimeric purity ( > g o % ) , even with [ l a P I F ~ as fluorinating reagent, as demonstrated by HPLC and high-resolution 'Hand IOF-NMR spectroscopy. This is the first report of a highly stereoselective reaction using molecular fluorine in a polar protic solvent. Epimerization at C-3 of galactal led to a-2-deoxy-2-fluoro-D-idose and a-2-deoxy-2-fluoro-D-gulose as minor products. A simple apparatus for a partially remote-controlled preparation of 2deoxy-2-[~~F]fluoro-D-galactose is also described.
๐ SIMILAR VOLUMES
The presence of 2-deoxy-2-['sF]fluoro-D-mannose (['sF]FDM) in 2-deoxy-2-['\*F]fluoro-o-glucose (['aF]FDG) prepared by the reaction of 3,4,6-tri-0-acetyi-D-glucal (TAG) with ['\*F]acetyl hypofluorite ([r\*F]CHsCOOF) or ['sF]Fr was quantified by radio HPLC analysis of reacetylated ['\*F]FDG. The solve
## Abstract A convenient method for the synthesis of ^18^Fโ2โdeoxyโ2โfluoroโDโglucose (4) and ^18^Fโ2โdeoxyโ2โfluoroโDโmannose (8) by the direct fluorination of 3,4,6โtriโ0โacetylโDโglucal with ^18^FโF~2~ is described. ^14^Cโ2โdeoxyโ2โfluoroโDโglucose has been synthesized from ^14^Cโ3,4,6โtriโ0โace
A procedure has been developed that allows the separation of 2-deoxy-2-[18F]fluoro-D-glucose from 2-deoxy-2-[18F]fluoro-D-mannose employing selectively optimized ion-moderated partition chromatography. Both compounds can be obtained with a greater than 98% chemical and radiochemical purity in about