## B i o l o g i c a l l y l a b e l l e d [l-14C) g l y c e r o l ( L -[ l -' " C ) g l y c e r o l ) 048 prepared by a two s t e p p r o c e s s . S t e p one i n v o 1 v e d t h e p r e p a r a t i o n of [I -C ] g 2 y ce r o 1 3 -p ho sp ha t e from l4C02 and D-ribuloee 1,5 -diphoephate u s i
The enzymatic preparation of L(+)-3-hydroxy(3-14C)butyrate
✍ Scribed by George Dombrowski Jr.; Kuen-Lan Chao; Kenneth R. Swiatek
- Publisher
- John Wiley and Sons
- Year
- 1980
- Tongue
- French
- Weight
- 162 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0022-2135
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
L(+)‐3‐hydroxy(3‐^14^C)butyrate was prepared by treating the D, L‐racemic mixture with the stereospecific D‐(−)‐3‐hydroxybutyrate dehydrogenase enzyme. The unfavorable equilibrium position of the dehydrogenase was overcome by the addition of acetaldehyde and alcohol dehydrogenase. The D‐isomer was converted by this treatment to acetoacetate. The unreacted L(+)‐3‐hydroxy(3‐^14^C)butyrate was then isolated by preparative silica gel chromatography in an overall yield of 65%.
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## Abstract A novel five‐step synthesis of 3,3′‐ dichlorobenzidine‐(phenyl‐U^14^C) dihydrochloride is described. The method consists of the preparation of benzidine‐(phenyl‐U‐^14^C) followed by acetylation, chlorination with N‐chlorosuccinimide (NCS), and hydrolysis. The specific activity of the pr
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