US3725412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted {60 ,{60 ,{65 -triphenyl-aminopropanols
Assignee: Sandoz AG
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Filing: 1969-12-29
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Granted: 1973-04-03
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Expires: 1989-12-29
Abstract
Abstract Substituted Alpha , Alpha , gamma -triphenyl-aminopropanols, e.g., 4-methyl- Alpha , Alpha , gamma -triphenyl-1piperazinepropanol, are prepared by treating substituted Beta phenyl- Beta -aminopropiophenones with phenyl lithium or substituted phenyl lithium compounds. The compounds obtained are useful as diuretics and hypotensive/antihypertensive agents.
Inventors
- 👤 W Houlihan
- 👤 J Nadelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:39
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/08; C07D295/084; C07D295/092
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
7 words
there are no adjacent trifluoromethyl groups and
Claim 2
Dependent Claim
16 words
The compound of claim 1 which is 4-methyl- Alpha , Alpha , gamma -triphenyl-1-piperazine propanol dihydrochloride.
Claim 3
Dependent Claim
7 words
there are no adjacent tertiary butyl groups.
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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |