US3723524A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polar-substituted propanolamines as anti-angina and anti-hypertensive agents
Assignee: Pfizer Inc
•
Filing: 1970-05-11
•
Granted: 1973-03-27
•
Expires: 1990-05-11
Abstract
Abstract Novel propanolamine derivatives, especially 3-phenoxy-1phenoxyalkylamino-2-propanols, useful in the treatment of hypertension and cardiac conditions, such as angina pectoris and cardiac arrhythmias.
Inventors
- 👤 J Augstein
- 👤 A Ham
- 👤 P Leeming
- 👤 M Snarey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:15
CPC Classifications
C; C07; C07D; C07D263/00; C07D263/02; C07D263/04; C07C; C07C243/00; C07C243/24; C07C243/38; C07C247/00; C07D263/06
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
23 words
A compound as claimed in claim 1 in which R4 is hydrogen or a methyl group, R5 is hydrogen, and n is 1.
Claim 2
Dependent Claim
16 words
A compound as claimed in claim 2 in which R2 is hydrogen, chlorine, methyl, or methoxy.
Claim 3
Dependent Claim
17 words
A compound as claimed in claim 2, in which R3 is in the 2- or 4-ring position.
Claim 4
Dependent Claim
50 words
A compound as claimed in claim 4, in which R1 is methyl, methoxy, or phenyl on the 2-ring position, and R3 is CONH2 in the 2- or 4-ring position, provided that when R3 is in the 2-position then R2 is methyl or methoxy in the 4-, 5- or 6-ring position.
Claim 5
Dependent Claim
1 words
1-(2-(4-carbamoylphenoxy)ethylamino)-3-(2-methyl-phenoxy)propan-2-ol.
Claim 6
Dependent Claim
1 words
1-(2-(4-carbamoylphenoxy)ethylamino)-3-(2-methoxy-phenoxy)propan-2-ol.
Claim 7
Dependent Claim
2 words
1-(2-(2-carbamoyl-4-methylphenoxy)ethylamino)-3-(2-methylphenoxy)propan-2 -ol.
Claim 8
Dependent Claim
2 words
1-(2-(2-carbamoyl-4-methylphenoxy)-1-methyl-ethylamino)-3-(2 -methylphenoxy)propan-2-ol.
Claim 9
Dependent Claim
2 words
1(2-(2-carbamoyl-4-methoxyphenoxy)-1-methyl-ethyl-amino)-3-(2 -methylphenoxy)propan-2-ol.
Claim 10
Dependent Claim
2 words
1-(2-(2-carbamoyl-6-methylphenoxy)-1-methyl-ethyl-amino)-3-(2 -methylphenoxy)propan-2-ol.
Claim 11
Dependent Claim
2 words
1-(2-(4-carbamoylphenoxy)-1-methyl-ethylamino)-3-(2-phenylphenoxy)propan-2 -ol.
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) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |