## Abstract A convenient synthesis is reported of lithocholic acid labelled in high isotopic purity with two atoms of deuterium at C‐11. Incorporation of deuterium is achieved by base‐catalyzed equilibration of a 12‐oxo bile acid in heavy water. The product is converted __in situ__ into its tosylhy
Synthesis of the enantiomers of 3-deuterium labelled lactic acid
✍ Scribed by Michèle Sanière; Hassane El Hafa; Yves le Merrer; Jean Claude Depezay; Francis Rocchiccioli
- Publisher
- John Wiley and Sons
- Year
- 1991
- Tongue
- French
- Weight
- 315 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0022-2135
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✦ Synopsis
Abstract
Both R‐ and S‐ enantiomers of 3‐monodeuterated lactic acid ([3‐^2^H]‐2(R) and 2(S)‐hydroxypropanoic acids) were synthesized by regiospecific nucleophilic opening of diastereoisomer epoxides derived from D‐mannitol, with lithium aluminium deuteride. Spectroscopic analysis of the product shows a complete deutero‐incorporation which makes [3‐^2^H]‐lactic acid suitable as an internal standard using gas chromatography‐mass spectroscopy.
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