US3843681A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-carboxamido pyrano(thiopyrano)(3,4-6)indole derivatives
Assignee: Wyeth LLC
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Filing: 1971-06-01
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Granted: 1974-10-22
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Expires: 1991-06-01
Abstract
Abstract Indole derivatives characterized by having a 1,3,4,9tetrahydropyrano(3,4-b)indole or 1,3,4,9tetrahydrothiopyrano(3,4-b)indole nucleus bearing a substituent in position 1, said substituent incorporating an acid, ester or amide function therein, are disclosed. The nucleus is further substituted at position 1 and may be optionally substituted at positions 3, 4, 5, 6, 7, 8, and 9. The derivatives are useful antiinflammatory, analgesic, antibacterial and antifungal agents and methods for their preparation and use are also disclosed.
Inventors
- 👤 C Demerson
- 👤 I Jirkovsky
- 👤 L Humber
- 👤 T Dobson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:50
CPC Classifications
C; C07; C07D; C07D495/00; C07D495/02; C07D495/04; C07D491/00; C07D491/02; C07D491/04; C07D491/044; C07D491/052; H; H10; H10D; H10D10/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA:
Claim 3
Dependent Claim
5 words
A compound of the formula:
Claim 4
Dependent Claim
5 words
A compound of the formula:
Claim 5
Dependent Claim
6 words
N,N,1-Trimethyl-1,3,4,9-tetrahydropyrano(3,4-b)-indole-1-acetamide, as claimed in claim 2.
Claim 6
Dependent Claim
6 words
1-Methyl-1,3,4,9-tetrahydropyrano(3,4-b)-indole-1-acetamide, as claimed in claim 2.
Claim 7
Dependent Claim
6 words
N,1-Dimethyl-1,3,4,9-tetrahydropyrano(3,4-b)indole-1-acetamide, as claimed in claim 2.
Claim 8
Dependent Claim
6 words
N-Phenyl-1-methyl-1,3,4,9-tetrahydropyrano(3,4-b)indole-1-acetamide, as claimed in claim 2.
Claim 9
Dependent Claim
6 words
N,1-Dimethyl-1,3,4,9-tetrahydropyrano(3,4-b)indole-1-propionamide, as claimed in claim 2.
Claim 10
Dependent Claim
6 words
1-Methyl-1,3,4,9-tetrahydropyrano(3,4-b)indole-1-carboxamide, as claimed in claim 2.
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) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |