Isotopic exchange of hydrogen in a system of s~lvent-water-~H was used to prepare 5-Juoroorotic a ~i d -~H ( G ) which was decarboxylated and the hydrogen-3H removed from labile bonds to yield 5'-Juorouracil-6-3H. It was found in tracer experiments that a suitable solvent for the isotopic exchange o
Preparation of 6-azauracil-5-3H and 6-azauridine-5-3H of high molar activity
✍ Scribed by Jiri Filip; Jan Skoda; Hynek Hradec
- Publisher
- John Wiley and Sons
- Year
- 1974
- Tongue
- French
- Weight
- 404 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0022-2135
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✦ Synopsis
Abstract
Catalytic reductive dehalogenation of 5‐bromo‐6‐azauracil with carrier‐free tritium led to 6‐azauracil‐5‐^3^ H of a molar activity of 19.0 Ci/mmole. The reaction conditions for the catalytic reductive dehalogenation were examined in tracer experiments. Microbial transformation was used for the preparation of 6‐azauridine‐5‐^3^ H from 6‐azauracil‐5‐^3^ H. 6‐Azauridine‐5‐^3^‐ H was prepared at a molar activity of 18.8 Ci/mmole. In both compounds the stability of tritium was investigated in an aqueous medium at 100°C.
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