A synthetic procedure for [ 3H]ciprofibrate is described. The radiolabel was introduced by catalytic dehalogenation of bromociprofibrate with tritium gas, as shown in the Scheme.
Synthesis of tritiated (S)-10-bromoacetamidomethylcamptothecin
✍ Scribed by Arthur Y. L. Shu; Dalia Jakas; J. Richard Heys
- Publisher
- John Wiley and Sons
- Year
- 1990
- Tongue
- French
- Weight
- 379 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0022-2135
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✦ Synopsis
Abstract
Tritiated (S)‐10‐bromoacetamidomethylcamptothecin was prepared starting from (S)‐10‐hydroxycamptothecin. The key step consisted of palladium catalyzed direct tritium exchange on the intermediate (S)‐10‐aminomethylcamptothecin. ^3^H NMR spectroscopy indicated the tritium label was located exclusively at the C‐5 position.
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