+)-Pisatin, the phytoalexin produced by pea (Pisum sativuni) tissues on fungal infection or by abiotic treatment, has been tritiated with high specific radioactivity (23.9 Ci.mnol-1) by treatment with n-butyllithium and T 2 0 . CCC 0362-4803/96/06057945 01996 by John Wiley & Sons, Ltd.
Preparation of high specific activity [15,16-3H]-7-benzylidenenaltrexone
β Scribed by Anita H. Lewin; Pamela B. Lamb
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- French
- Weight
- 136 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0022-2135
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β¦ Synopsis
The preparation of the 61-specific ligand 7-benzylidenenaltrexone (BNTX), labeled with tritium at high specific activity (14.4 Ciimmol) was prepared in 33% yield and >98% purity by the aldol condensation of high specific activity [15,1 6-3H]naltrexone with benzaldehyde at high dilution.
π SIMILAR VOLUMES
The preparation of the title compound, a selective 5-HT, antagonist with anti-emetic properties, is described. The key intermediate involved is 6-bromo-1,2-dihydronaphthoic acid (s), which was synthesized from 4-bromophenylacetic acid by Micheal addition, acid-induced ring cyclization, reduction and
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