## Abstract Carbonโ14 labeled vigabatrin was synthesized in 5 steps from 5โhydroxymethylโ2โpyrrolidone tosylate and NaCNโ[^14^C]. A key step involved reduction of the resulting nitrile in the presence of excess dimethylamine to give the dimethylaminoโethyl 2โpyrrolidone derivative in one step. This
An efficient synthesis of carbon-14 labelled vigabatrin
โ Scribed by Harpal S. Gill
- Publisher
- John Wiley and Sons
- Year
- 1995
- Tongue
- French
- Weight
- 229 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0022-2135
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โฆ Synopsis
Vigabatrin-[6-14C] ((R,S)-4-amino-5-hexenoic-[6-14C] acid) was synthesized by employing Wittig condensation of 1-(1- butenyl)-2-oxo-5-pyrolidinecarboxaldehyde with methyl-[ 14C]-triphenylphosphonium iodide as the key step. The synthetic sequence involved 3 steps and produced the title compound in 70% overall yield with a radiochemical purity of 100%.
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## Abstract A new antibacterial agent gemifloxacin was labelled with carbonโ14 for studies of pharmacokinetics and metabolism, the label was located in position 3 of the quinolone ring system. The overall radiochemical yield of the 14โstep synthesis, starting from [2โ^14^C]sodium acetate was 16.6%,
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