## Abstract __N__‐(1‐methyl‐2‐oxo‐5‐phenyl‐2,3‐dihydro‐1H‐benzo[e][1,4]diazepin‐3‐yl)‐benzamide‐[carboxyl‐^14^C] has been synthesized from benzonitrile‐[cyano‐^14^C]. Copyright © 2005 John Wiley & Sons, Ltd.
Synthesis of N-(2,3-dihydro-1-[14C]methyl-2-oxo-5-phenyl-1H-1,4-benzodiazepin-3-yl)-benzamide and N-(2,3-dihydro-1-[14C]methyl-2-oxo-5-phenyl-1H-1,4-benzodiazepin-3-yl)-N-[14C]methyl-benzamide as novel carbon-14 labelled CCK antagonists
✍ Scribed by Hojatollah Matloubi; Ali Khalaj; Reza Dowlatabadi; Gholamhossein Shirvani
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- French
- Weight
- 74 KB
- Volume
- 45
- Category
- Article
- ISSN
- 0022-2135
- DOI
- 10.1002/jlcr.555
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✦ Synopsis
Abstract
Two benzodiazepine CCK antagonists N‐(2,3‐dihydro‐1‐[^14^C]methyl‐2‐oxo‐5‐phenyl‐1H 1,4‐benzodiazepin‐3‐yl)‐benzamide 2 and N‐(2,3‐dihydro‐1‐[^14^C]methyl‐2‐oxo‐5‐phenyl‐1H‐1,4‐benzodiazepin‐3‐yl)‐[^14^C]methyl‐benzamide 3 were synthesized in high yields through the reaction of N‐(2,3‐dihydro‐2‐oxo‐5‐phenyl‐1H‐1,4‐benzodiazepin‐3‐yl)‐benzamide 1 with [^14^C] methyl iodide in different situations. Copyright © 2002 John Wiley & Sons, Ltd.
📜 SIMILAR VOLUMES
## Abstract Two benzodiazepines, Diazepam and Flunitrazepam, labeled with carbon‐14 in position 5 of the diazepine ring have been synthesized. Use of a condensation between iminochlorides and ^14^C‐benzonitriles, followed by exhaustive methylation of the resulting quinazolines and hydrolyses is des
## Abstract The synthesis from carbon‐^14^C dioxide of 1, 3‐dihydro‐1‐methyl‐7‐nitro‐5‐phenyl‐2H‐1, 4‐benzodiazepin‐2‐one‐5‐^14^C (I) for use in metabolic studies has been described. The synthesis was achieved by the sequence shown in figure 1. The overall yield of labelled nimetazepam (I) was near
Tema~epam-2-'~C, 7-Chloro-1,3-ihydro-3-hydroxy-1 -methyl-5-phenyl-2H-1,4-benzodiazepin-2-one--"C, was prepared in a f ive-step synthesis. Chl~roacetic-l-~~C acid was converted to the acid chloride with thionyl chloride. The acid chloride was allowed to react with 2-methylamino-5-chloro-benzophenone
## Abstract 7‐Chloro‐1,3‐dihydro‐5‐(2‐fluorophenyl)‐1‐methyl‐2H‐1,4‐benzodiazepin‐2‐one (Fludiazepam) (I), an anti‐anxiety agent, was labelled with carbon‐14 at C‐5 position for metabolic studies. The reaction sequence for the synthesis is shown in Fig. 2. o‐Fluorobenzoic‐^14^C acid (IV) was prepar