US4166910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3-(Nitrogen containing heterocyclic)amino) benzisothiazole-1,1-dioxide
Assignee: ER Squibb and Sons LLC
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Filing: 1978-07-13
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Granted: 1979-09-04
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Expires: 1998-07-13
Abstract
Abstract Compounds having the formula ##STR1## wherein R 1 is hydrogen, halogen, alkyl, alkoxy or nitro; R 2 is hydrogen, halogen or alkoxy; and R 3 is pyridinyl, pyrimidinyl, pyrazinyl, or 1,3,5-triazinyl, have antiinfammatory activity.
Inventors
- 👤 Peter C. Wade
- 👤 B. Richard Vogt
- 👤 Thomas P. Kissick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:18
CPC Classifications
C; C07; C07D; C07D417/00; C07D417/02; C07D417/12; C07D275/00; C07D275/04; C07D275/06
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
75 words
A compound having the formula ##STR10## or a pharmaceutically acceptable salt thereof, wherein R 1 is hydrogen, halogen, alkyl, alkoxy or nitro and R 2 is hydrogen, halogen or alkoxy, provided that if R 2 is other than hydrogen, R 1 and R 2 are the same; and R 3 is 2-pyridinyl, 3-pyridinyl, 4-pyridinyl, 2-pyrimidinyl, 4-pyrimidinyl, 5-pyrimidinyl, 2-pyrazinyl, or 1,3,5-triazin-2-yl; wherein the terms "alkyl" and "alkoxy" refer to groups having 1 to 4 carbon atoms.
Claim 2
Dependent Claim
75 words
A compound having the formula ##STR10## or a pharmaceutically acceptable salt thereof, wherein R 1 is hydrogen, halogen, alkyl, alkoxy or nitro and R 2 is hydrogen, halogen or alkoxy, provided that if R 2 is other than hydrogen, R 1 and R 2 are the same; and R 3 is 2-pyridinyl, 3-pyridinyl, 4-pyridinyl, 2-pyrimidinyl, 4-pyrimidinyl, 5-pyrimidinyl, 2-pyrazinyl, or 1,3,5-triazin-2-yl; wherein the terms "alkyl" and "alkoxy" refer to groups having 1 to 4 carbon atoms.
Claim 3
Dependent Claim
15 words
A compound in accordance with claim 1 wherein R 3 is 2-pyridinyl, 3-pyridinyl or 4-pyridinyl.
Claim 4
Dependent Claim
15 words
A compound in accordance with claim 1 wherein R 3 is 2-pyrimidinyl, 4-pyrimidinyl, or 5-pyrimidinyl.
Claim 5
Dependent Claim
12 words
A compound in accordance with claim 1 wherein R 3 is 2-pyrazinyl.
Claim 6
Dependent Claim
12 words
A compound in accordance with claim 1 wherein R 3 is 1,3,5-triazin-2-yl.
Claim 7
Dependent Claim
12 words
The compound in accordance with claim 2 having the name N-(2-pyridinyl)-1,2-benzisothiazol-3-amine, 1,1-dioxide.
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) | 1982-09-03 | 1983-03-05 | 1983-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-09-03 | 1987-03-05 | 1987-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-09-03 | 1991-03-05 | 1991-09-04 | $7700.00 | Window Closed / Lapsed |