US3894031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indantetrol derivatives
Assignee: ER Squibb and Sons LLC
•
Filing: 1973-06-21
•
Granted: 1975-07-08
•
Expires: 1993-06-21
Abstract
Abstract Compounds are provided having the structure WHEREIN N IS 1,2 OR 3, M AND M'' ARE 0, 1 OR 2, R1, R2, R3 and R4 may be the same or different and can be hydrogen, lower alkyl, halolower alkyl, acyl, lower alkoxy-carbonyl D R A W I N G amido or lower alkoxyalkylene, X is a straight or branched bivalent aliphatic radical and Y is These compounds are useful in the treatment of hypertension.
Inventors
- 👤 Frederic Peter Hauck
- 👤 Joyce Reid
- 👤 Venkatachala L Narayanan
- 👤 Christopher M Cimarusti
- 👤 Rudiger D Haugwitz
- 👤 Joseph E Sundeen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:55
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/08; C07D295/096; C07C; C07C17/00; C07C17/26; C07C17/263; C07C17/266; C07C309/00; C07C33/00; C07C33/34; C07C33/38; C07D211/00; C07D211/04; C07D211/06; C07D211/08; C07D211/10; C07D211/12; C07D211/14; C07D211/18; C07D211/20; C07D211/22; C07D211/68; C07D211/70; C07D213/00; C07D213/02; C07D213/04; C07D213/06; C07D213/16; C07D213/20; C07D295/02; C07D295/027; C07D295/03; C07D295/033; C07C2602/00; C07C2602/02; C07C2602/04; C07C2602/08
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
5 words
A COMPOUND OF THE STRUCTURE
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE STRUCTURE
Claim 3
Dependent Claim
21 words
A compound according to claim 1 wherein R1, R2, R3 and R4 are hydrogen or alkanoyl of 1 to 3 carbons.
Claim 4
Dependent Claim
14 words
A compound according to claim 2 wherein R1, R2, R3 and R4 are acetyl.
Claim 5
Dependent Claim
9 words
A compound according to claim 1 having the structure
Claim 6
Dependent Claim
9 words
A compound according to Claim 1 having the structure
Claim 7
Dependent Claim
20 words
A compound according to claim 1 wherein R1, R2, R3 and R4 are lower alkyl, halo-lower alkyl, or lower alkoxy-alkylene.
Claim 8
Dependent Claim
14 words
A compound according to claim 1 wherein R1, R2, R3 and R4 are amido.
Claim 9
Dependent Claim
16 words
A compound according to claim 1 wherein R1, R2, R3 and R4 are lower alkoxy carbonyl.
Claim 10
Dependent Claim
13 words
A process for preparing compounds as defined in claim 1 wherein Y is
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-07 | 1979-01-06 | 1979-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-07 | 1983-01-06 | 1983-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-07 | 1987-01-06 | 1987-07-08 | $7700.00 | Window Closed / Lapsed |