## Abstract To increase the bio‐availability of naturally occurring steroids, esterification of the 17‐hydroxy position is a useful approach. Besides (branched) alkanecarboxylic acids^1^) and cyclohexanecarboxylic acid^2^) also cyclooctyl acetic acid (1) was applied. To establish the biological fat
Synthesis and analysis of tritiated neuropeptides
✍ Scribed by Frans M. Kaspersen; Fons M. van Rooy; Jan Wallaart; Carel Funke
- Book ID
- 104588547
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 401 KB
- Volume
- 102
- Category
- Article
- ISSN
- 0165-0513
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📜 SIMILAR VOLUMES
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.
## Summarv Tritium lahelled bumetanide of high specific activity (16 Ci/mmol) has been prepared in our lahoratory by tris(tripheny1phosphine) rhodium chloride catalyzed reduction of an olefinic precursor with carrier free tritium pas in benzene-ethanol (1:l). The product is labelled in the N-butyl
## Abstract Tritiated clenbuterol was prepared starting from 4‐aminoacetophenone (I) which was selectively brominated to 4‐amino‐3,5‐dibromoacetopheno ne (II), then to 4‐amino‐α,3,5‐tribromoacetophenone (III) and reacted with tert.butylamine to 4‐amino‐3,5‐dibromo‐α‐tert.butylaminoacetoph‐none(IV).
## Abstract Apogossypol with deuterium or tritium in the 8 and 8′ positions can be synthesized by the base catalyzed deformylation of gossypol. The position of the labeling is established by the pmr spectrum of the material derived from the reaction of deuterium oxide and sodium deuteroxide. The sp