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In vivo Evaluation of Substituted 3-Amino-1,4-benzodiazepines as Anti-depressant, Anxiolytic and Anti-nociceptive Agents
| Content Provider | Scilit |
|---|---|
| Author | Lattmann, Eric Lattmann, Pornthip Boonprakob, Yodchai Airarat, Wanchai Singh, Harjit Offel, Michael Sattayasai, Jintana |
| Copyright Year | 2009 |
| Description | Oxazepam (CAS 604-75-1) 4a served as building block in the synthesis of substituted 3-amino-1,4-benzodiazepines, which were subsequently tested in various CNS animal models. The hydroxy group of oxazepam was either activated as a chloride (Method A) or as a phosphor-oxy derivative (Method B) giving the desired 3-amino-1,4-benzodiapines 6a–6r in high yields with primary and secondary amines in a typical nucleophilic substitution reaction. Eighteen 3-substituted 1,4-benzodiazepines were prepared and served as new chemical entities and for lead structure discovery. The mixed cholecystokinin (CCK) antagonist 6e showed anxiolytic and antidepressant effects from 10 μg/kg in mice in the elevated x-maze test and the forced swimming test. The $CCK_{1}$ antagonist 6 g has shown antidepressant effects from the same dose, but lacked anxiolytic properties. Both compounds potentiated at a dose of 0.5 mg/kg morphine antinociception with a maximum possible effect (MPE) about 35%. By assessing initially the MPE of antinocipection for the 18 newly synthesised benzodiazepines in the tail-flick test, 4 other benzodiazepines were found active. In further in vivo evaluation the cyclohexyl derivative 6i displayed anxiolytic, antidepressant and antinociceptive properties as single agent at a dose of 5 mg/kg without toxicity. The benzodiazepines 6i and 6p, which initially showed a higher MPE in terms of morphine potentiation (43/44%) showed analgesic effects as single agents, without having anxiolytic or antidepressant properties. The amino-piperidinyl derivative 6p displayed a similar dose-response relationship to morphine, but was 3 times more potent. |
| Related Links | http://www.thieme-connect.de/products/ejournals/pdf/10.1055/s-0031-1296366.pdf |
| Ending Page | 71 |
| Page Count | 11 |
| Starting Page | 61 |
| ISSN | 00044172 |
| e-ISSN | 16167066 |
| DOI | 10.1055/s-0031-1296366 |
| Journal | Arzneimittelforschung |
| Issue Number | 02 |
| Volume Number | 59 |
| Language | English |
| Publisher | Georg Thieme Verlag KG |
| Publisher Date | 2009-02-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: Arzneimittelforschung Medicinal Chemistry 3-amino-5-phenyl-l 4-benzodiazepinone 4-benzodiazepines Cholecystokinin Antagonists |
| Content Type | Text |
| Resource Type | Article |
| Subject | Drug Discovery |