US3862953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cycloalkene(B)indoles
Assignee: F Hoffmann La Roche AG
•
Filing: 1972-07-27
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Granted: 1975-01-28
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Expires: 1992-07-27
Abstract
Abstract 9-(Pyridylalkyl)-1,2,3,4-tetrahydrocarbazoles and 4(pyridylalkyl)-cyclopenta(b)indoles prepared by reacting the corresponding phenyl hydrazines and cyclohexanones or cyclopentanones, respectively, are described. The products of the invention are useful as antihyperlipidemic agents.
Inventors
- 👤 Leo Berger
- 👤 Alfred John Corraz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:35
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/24; C07D213/36; C07D213/42; C07D213/38; C07D213/54; C07D213/55; C07D213/56
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
7 words
A compound in accordance with claim 1,
Claim 2
Dependent Claim
7 words
A compound in accordance with claim 2,
Claim 3
Dependent Claim
7 words
A compound in accordance with claim 2,
Claim 4
Dependent Claim
10 words
A compound in accordance with claim 4, 6-chloro-9-(2-(2-methyl-5-pyridyl)ethyl)-1,2,3,4-tetrahydrocarbazole-2 -carboxylic acid.
Claim 5
Dependent Claim
12 words
A compound in accordance with claim 4, 6-chloro-9-(2-(2-methyl-5-pyridyl)ethyl)-1,2,3,4-tetrahydrocarbazole-2 -carboxylic acid ethyl ester.
Claim 6
Dependent Claim
10 words
A compound in accordance with claim 4, 6-methyl-9-(2-(2-methyl-5-pyridyl)ethyl)-1,2,3,4-tetrahydrocarbazole-2 -carboxylic acid.
Claim 7
Dependent Claim
9 words
A compound in accordance with claim 4, 6-chloro-9-(2-(2-methyl-5-pyridyl)ethyl)-1,2,3,4-tetrahydrocarbazole-2 -methanol.
Claim 8
Dependent Claim
9 words
A compound in accordance with claim 3, 7-chloro-4-(2-(2-methyl-5-pyridyl)ethyl)cyclopenta(b)indole-2-carboxylic acid.
Claim 9
Dependent Claim
11 words
A compound in accordance with claim 3, 7-chloro-4-(2-(2-methyl-5-pyridyl)ethyl)cyclopenta(b)indole-2-carboxylic acid ethyl ester.
Claim 10
Dependent Claim
11 words
A compound in accordance with claim 4, 6-chloro-9-(2-(2-methyl-5-pyridyl)ethyl)-1,2,3,4-tetrahydrocarbazole-2 -carboxylic acid hydrochloride.
Claim 11
Dependent Claim
10 words
A compound in accordance with claim 4, 6-chloro-9-(2-(2-metHyl-5-pyridyl)ethyl)-1,2,3,4-tetrahydrocarbazole-2 -methanol hydrochloride.
References Cited (Backward Citations)
US2016480A
Cited
US3154556A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-27 | 1978-07-29 | 1979-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-27 | 1982-07-29 | 1983-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-27 | 1986-07-29 | 1987-01-28 | $7700.00 | Window Closed / Lapsed |