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| Trade names | Pirazidol |
| Routes of administration |
Oral |
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| Pharmacokinetic data | |
| Bioavailability | 20–30% |
| Protein binding | 95% |
| Metabolism | hepatic |
| Onset of action | 2 to 8 hours |
| Elimination half-life | up to 8 days |
| Excretion | urine (50–70%), feces (25–45%) |
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| Chemical and physical data | |
| Formula | C15H18N2 |
| Molar mass | 226.323 g·mol−1 |
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Pirlindole (Lifril, Pyrazidol) is mainly a reversible inhibitor of monoamine oxidase A (RIMA) and secondly a SNRI which was developed and is used in Russia as an antidepressant. It is structurally and pharmacologically related to metralindole.
Synthesis
The Fischer indole synthesis between p-Tolylhydrazine Hydrochloride [637-60-5] (1) and 1,2-Cyclohexanedione [765-87-7] (2) gives 6-methyl-2,3,4,9-tetrahydrocarbazol-1-one [3449-48-7] (3). Imine formation with ethanolamine [141-43-5] (4) gives CID:2838578 (5). Halogenation with phosphorus oxychloride gives (6). Intramolcular alkylation with the indole nitrogen resulted in Dehydropirlindole [75804-32-9] (7). Reduction of the imine with sodium borohydride completes the synthesis of pirindole (8).