Tetrahydrocyclopent[b]indole-3-acetic acid, tetrahydrocarbazole-1-acetic acid and hexahydrocyclohept[b]-indole-6-acetic acid derivatives in which the carbon bearing alkyl, lower alkenyl or lower cycloalkyl are disclosed. The compounds are useful antiinflammatory agents and methods for their preparation and use are described.
Tricyclic alkylamines, and their acid addition salts with pharmaceutically acceptable acids, are disclosed. The tricyclic ring system for these compounds is selected from the group consisting of 1,2,3,4-tetrahydrocyclopent[b]indole, 1,2,3,4-tetrahydrocarbazole and 5,6,7,8,9,10-hexahydrocyclohept[b]indole. The compounds are characterized further in that the ring system carbon atom bearing the alkylamine residue is carbon atom 3, 1 and 6 in the respective ring systems and in each case the said carbon atom also is substituted with a lower alkyl. The tricyclic alkylamines are useful antidepressant agents. Methods for their preparation and use are disclosed.
Cycloalkanoindoles. 1. Syntheses and antiinflammatory actions of some acidic tetrahydrocarbazoles, cyclopentindoles, and cycloheptindoles
作者:Andre A. Asselin、Leslie G. Humber、Thomas A. Dobson、Jacqueline Komlossy、Rene R. Martel
DOI:10.1021/jm00228a010
日期:1976.6
A novel series of acidic cycloalkanoindoles comprising tetrahydrocarbazole-, cyclopentindole-, and cycloheptindole-1-acetic acids has been synthesized via the Fischer indolization between a phenylhydrazine and a 1-alkyl-2-oxocycloalkaneacetic acid ester. These compounds were evaluated, orally, for their capacities to decrease estabished adjuvant arthritis in rats. The most active compound of the series was 1-ethyl-8-n-propyl-1,2,3,4-tetrahydrocarbazole-1-acetic acid (AY-24 873),which had an ED50 of 1.1 +/- 0.2 mg/kg. AY-24 873 was also studied orally in rats for its effect on the acute inflammatory response in the carrageenin paw edema test. It was found that AY-24 873 was about ten times more active against the chromic than against the acute models of inflammation used.