Patent US4021431A successfully refreshed from Google Patents.
US4021431A
Expired / Lapsed
US
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3-(Piperidino-lower-alkyl)-indoles
Assignee: STWB Inc
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Filing: 1975-11-20
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Granted: 1977-05-03
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Expires: 1995-11-20
Abstract
Abstract 1-Acyl-3-(amino-lower-alkyl)indoles, useful as anti-inflammatory agents, are prepared either by acylation of a 3-(amino-lower-alkyl)indole; by Fisher indole synthesis from an N'-acylphenylhydrazine and an amino-lower-alkanone; by alkylation of an amine with a 1-acyl-3-(halo-lower-alkyl)indole; or by reductive alkylation of a 1-acyl-3-indole-lower-alkylcarboxaldehyde.
Inventors
- 👤 Bernard L. Zenitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:22
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/06; C07D213/16; C07C; C07C243/00; C07C243/24; C07C243/26; C07C243/30; C07C243/32; C07C243/38; C07D207/00; C07D207/02; C07D207/04; C07D207/06; C07D207/18; C07D207/20; C07D209/00; C07D209/02; C07D209/04; C07D209/10; C07D209/12; C07D209/14; C07D209/18; C07D211/00; C07D211/04; C07D211/06; C07D211/08; C07D211/10; C07D211/12; C07D211/14
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
23 words
A compound having the formula ##STR30## where R 1 is trifluoromethoxy; R 2 is lower-alkyl, R 6 is cycloalkyl-lower-alkyl, and Alk is lower-alkylene.
Claim 2
Dependent Claim
23 words
A compound having the formula ##STR30## where R 1 is trifluoromethoxy; R 2 is lower-alkyl, R 6 is cycloalkyl-lower-alkyl, and Alk is lower-alkylene.
Claim 3
Dependent Claim
5 words
3-[2-(2-Cyclohexylmethylpiperidino)ethyl]-5-trifluoromethoxy-2-methylindole according to claim 1.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-02 | 1980-11-01 | 1981-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-02 | 1984-11-01 | 1985-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-02 | 1988-11-01 | 1989-05-03 | $7700.00 | Window Closed / Lapsed |