## Abstract Commercial (__l__)‐carnitine chloride was N‐demethylated by the action of sodium benzenemercaptide in warm N,N‐dimethylformamide. The product 4‐(N,N‐dimethylammonio)‐3‐hydroxybutanoic acid chloride salt was isolated in good yield by ion exchange chromatography. Methylation of the produc
Synthesis of carboxy-labelled l-carnitine
✍ Scribed by Donald B. Goodfellow; Charles L. Hoppel; Julia S. Turkaly
- Publisher
- John Wiley and Sons
- Year
- 1982
- Tongue
- French
- Weight
- 351 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0022-2135
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✦ Synopsis
Abstract
A method for the production of carboxy‐labelled l‐carnitine is described. The first step is the chemical synthesis of 4‐N‐trimethylammoniobutanoate (butyrobetaine) from the precursors 4‐aminobutanoate and iodomethane. The second step involves the hydroxylation of butyrobetaine to form l‐carnitine using butyrobetaine hydroxylase partially purified from bovine calf liver. The method also can be used to synthesize Me‐labelled and uniformly‐chain‐labelled l‐carnitine.
📜 SIMILAR VOLUMES
A route to 'lc-labelled (R) -carnithe (1) , based on the methylation of the dimethyl derivative ( 2 ) is described. Furthermore, a five-step synthesis for the enantiomerically pure precursor ( 2 ) is outlined. 0362 -4803/91/050599 -08W5.00 ' i j 1991 by John Wiley & Sons. Ltd.
## Abstract The stereoselective synthesis of L‐[4‐^13^C]carnitine was achieved in 5 steps. The label was introduced from K^13^CN into an easily separated diastereomeric pair of 3‐deoxy‐D‐[1‐^13^C]aldohexoses. Reductive amination of the labeled aldohexose yielded the corresponding D‐1‐(dimethylamino
## Abstract D.l‐Coniine was labelled with tritium in the ring by catalytic hydrogenation of 2‐propylpyridine using Adams‐catalyst in the presence of acetic acid.
A synthetic route to stable-isotope-substituted L-phenyl-synthesized from both aromatic precursors by initial conversion into sodium phenylpyruvate and subsequent alanine is presented, which allows the introduction of 13 C, 15 N, and deuterium labels at any position or combination of transformation