US3940443A
Expired / Lapsed
US
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Amino ethanol-indane and tetrahydronaphthalene derivatives
Assignee: United States Department of the Navy
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Filing: 1965-07-14
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Granted: 1976-02-24
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Expires: 1985-07-14
Abstract
Abstract The invention provides novel indane and tetrahydronaphthalene derivatives ving the general formula ##SPC1## Wherein R 1 represents hydrogen or lower alkyl; R 2 represents lower alkyl; R 3 and R 4 independently represent hydrogen or lower alkyl; and n is the integer 1 or zero; and the pharmaceutically acceptable acid addition and quaternary ammonium salts thereof; which have hypotensive activity.
Inventors
- 👤 Adrian Charles Ward Curran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:51
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/61; C07C45/63
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
46 words
A compound having the formula: ##SPC9## wherein R 1 represents hydrogen or lower alkyl; R 2 represents lower alkyl; R 3 and R 4 independently represent hydrogen or lower alkyl; and n is the integer 1 or zero; or a pharmaceutically acceptable acid addition salt thereof.
Claim 2
Dependent Claim
46 words
A compound having the formula: ##SPC9## wherein R 1 represents hydrogen or lower alkyl; R 2 represents lower alkyl; R 3 and R 4 independently represent hydrogen or lower alkyl; and n is the integer 1 or zero; or a pharmaceutically acceptable acid addition salt thereof.
Claim 3
Dependent Claim
37 words
A compound as claimed in claim 1 wherein R 1 represents hydrogen or methyl; R 2 represents lower alkyl; R 3 and R 4 independently represent hydrogen or methyl; and n is the integer 1 or zero.
Claim 4
Dependent Claim
13 words
A compound as claimed in claim 1 wherein n is the integer 1.
Claim 5
Dependent Claim
11 words
A compound as claimed in claim 1 which is 1-[7-(1,1,3,4,4,6-hexamethyl)-1,2,3,4-tetrahydronaphthyl]-2-isopropylamino ethanol.
References Cited (Backward Citations)
US3255249A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-23 | 1979-08-25 | 1980-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-23 | 1983-08-25 | 1984-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-23 | 1987-08-25 | 1988-02-24 | $7700.00 | Window Closed / Lapsed |