## Abstract ^14^C‐Labeled E4010, [4‐(3‐chloro‐4‐methoxybenzyl)amino‐1‐(4‐hydroxy) ‐piperidino]‐6‐[4‐^14^C]phthalazinecarbonitrile monohydrochloride was synthesized for drug metabolism and pharmacokinetic studies using [1‐chloro‐4‐(3‐chloro‐4‐methoxybenzyl)amino]‐6‐[4‐^14^C]phthalazinecarbonitrile a
Synthesis of 14C-Labelled Cefclidin (E1040)
✍ Scribed by Isao Sugiyama; G. T. Woolley; Hitoshi Mizuo; Hiroshi Yamauchi
- Publisher
- John Wiley and Sons
- Year
- 1992
- Tongue
- French
- Weight
- 274 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0022-2135
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✦ Synopsis
Abstract
Cefclidin (E1040), a new injectable cephalosporin with potent antipseudomonal activity, was synthesized labelled with carbon‐14, starting from bromo[1‐^14^C]acetic acid according to the method illustrated in Scheme 1, 2. [^14^C] Cefclidin, having a specific activity of 3.43 MBq/mg (water content 15.3%, which was based on water content of non labelled compound prepared by the same procedure), was obtained in 2% overall radiochemical yield, with a radiochemical purity of more than 99.1%.
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## Abstract Sodium pariprazole (E3810), an inhibitory of H^+^,K^+^‐ATPase, was synthesized labelled with carbon‐14, starting from 2‐mercapto[2‐^14^C]‐benzimidazole 1 with a specific activity of 888 MBq/mmol. It was obtained in 49.3% radiochemical yield with a radiochemical purity of more than 98%.
14C-Labelled satigrel, or 4-cyano-5-(4'-methoxy tring-U-14CI phenyl)-5-(4"methoxyphenyl)-4-pentenoic acid was synthesized for drug metabolism and pharmacokinetic studies using 4,4'-diniethoxy [ring-U-W ] benzophenone as the starting material. The radiochemical yield was 10.0%. The specific radioacti
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