## Abstract The synthesis of tritium labelled nitroaryldihydropyridines was achieved by dehalogenation of a brominated precursor using the palladium hydroxide on charcoal as catalyst. The investigations described show the example [^3^H]nimodipine which was prepared with a specific activity of 16,4
Tritium labelling of benzamide drugs
✍ Scribed by Ilan Pri-Bar; Ouri Buchman
- Publisher
- John Wiley and Sons
- Year
- 1983
- Tongue
- French
- Weight
- 267 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0022-2135
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✦ Synopsis
Methods f o r t r i t i a t i o n o f s u l p i r i d e , s u l t o p r i d e and metoclopramide were H-metoclopramide (18.0 Ci/mmol) were obtained by hydrodebromination o f the developed and optimized. 3 H -s u l p i r i d e (7.1 Ci/mmol), 3H-sultopride (2.1 Ci/mmol) and r e l a t e d bromo d e r i v a t i v e s . The bromo d e r i v a t i v e s were prepared, i n turn, by appropriate 3 procedures s p e c i f i e d f o r each case.
📜 SIMILAR VOLUMES
## Abstract Mannitol, galactitol and myo‐inositol were labelled by a solid state isotope exchange with gaseous tritium. The labelled polyois were prepared with specific activities in the range 740–4440 TBq/mol (20–120 kCi/mol) after purification by HPLC.
## Abstract Attempts to reach phenothiazine derivatives labelled with tritium at high specific activity, are described. All the syntheses are based on catalysed dehalogenation procedures. The most encouraging results are those obtained by halogenation of the desired compound followed by catalytic d
## Abstract A convenient method is described to label a local anesthetic, benzocaine, with tritium. The bromoester of __para__ — aminobenzoic acid (PABA) was prepared from __para__‐nitrotoluene and was reduced with tritium. The generation of isotopic hydrogen and labelling of benzocaine was achieve
Dz binding properties, i s described. The pyrrolidine moiety of the molecule i s labelled with tritium by hydrogenation, to a specific a c t i v i t y o f up to 58 Ci/mnol and subsequently reacted with an acid chloride. The specificity o f the label i s confirmed by 'H-"R.
## Abstract Fast and efficient tritium labelling of the nonsteroidal anti‐inflammatory drugs naproxen, tolmetin and zomepirac is reported. Naproxen along with its (__R__)‐enantiomer were labelled by catalytic tritium–halogen exchange of the corresponding 5‐bromo derivatives providing [^3^H]naproxen