US3946060A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acetylene derivatives
Assignee: Richardson Vicks Inc
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Filing: 1975-03-18
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Granted: 1976-03-23
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Expires: 1995-03-18
Abstract
Abstract Novel compounds of the following general formula are useful pharmacologic agents and are useful as intermediates for the preparation of pharmacologically useful compounds. ##EQU1## wherein R 1 is selected from a lower alkyl group having from 1 to 4 carbon atoms, R 2 is selected from hydrogen and phenyl; and R 3 is selected from phenyl and trialkylmethyl; and acid addition salts thereof.
Inventors
- 👤 Brian Walter Metcalf
- 👤 Michel Jung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:07
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0803; C07F7/081
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
60 words
A compound selected from a base of the formula: wherein R 1 is selected from a lower alkyl group having from 1 to 4 carbon atoms; R 2 is selected from hydrogen and phenyl; R 3 is selected from phenyl and trialkylmethyl with the proviso that when R 3 is trialkylmethyl, R 2 is hydrogen; and acid addition salts thereof.
Claim 2
Dependent Claim
60 words
A compound selected from a base of the formula: wherein R 1 is selected from a lower alkyl group having from 1 to 4 carbon atoms; R 2 is selected from hydrogen and phenyl; R 3 is selected from phenyl and trialkylmethyl with the proviso that when R 3 is trialkylmethyl, R 2 is hydrogen; and acid addition salts thereof.
Claim 3
Dependent Claim
8 words
A compound of claim 1 which is: ##EQU8##
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) | 1979-03-23 | 1979-09-22 | 1980-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-23 | 1983-09-22 | 1984-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-23 | 1987-09-22 | 1988-03-23 | $7700.00 | Window Closed / Lapsed |