Deuteration of the racemate and the (2S)-(+)-enantiomer of the antiarrhythmic agent disopyramide, 4-diisopropylamino-2-(2-pyridyl)-2-phenylbutyramide
โ Scribed by Wendel L. Nelson; Janine A. Rees; Sandra J. Hulinek
- Book ID
- 102368075
- Publisher
- John Wiley and Sons
- Year
- 1981
- Tongue
- French
- Weight
- 199 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0022-2135
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โฆ Synopsis
Abstract
Deuteration of disopyramide, 4โdiisopropylaminoโ2โ(2โpyridyl)โ2โphenylbutyramide, was accomplished in an excess of ^2^H~2~SO~4~ at 125โ135ยฐC. Incorporation of 2โ4 atoms of deuterium occurs with 65% recovery of disopyramide. At higher temperatures (150ยฐC) greater incorporation of deuterium occurs, but substantial decomposition reduces the recovery of disopyramide to 25%.
๐ SIMILAR VOLUMES
## Abstract The synthesls of [d~14~] and [^13^C ^15^N] analogues of the potent antiarrhythmic agent 4โdiisopropylaminoโ2โphenylโ2โ(2โpyridyl) butyramide phosphate is described.
A three-step procedure for large scale preparation of pure racemic 2,3diaminobutane from relatively inexpensive meso 2,3-butanediol is described. Also, an efficient method for the resolution of (S,S) 2,3-diaminobutane from the racemic mixture in <95% ee has been developed.