Patent US5689534A successfully refreshed from Google Patents.
Patent US3941787A successfully refreshed from Google Patents.
US3941787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1,4-Disubstituted-5,8-methano-tetrahydro-quinazolinones
Assignee: Sandoz Inc
•
Filing: 1974-07-22
•
Granted: 1976-03-02
•
Expires: 1994-07-22
Abstract
Abstract Anti-inflammatory agents of the formula I:
Inventors
- 👤 William G. Salmond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:50
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/70
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
139 words
A compound of the formula ##SPC15## wherein: R is lower alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 8 carbon atoms or cycloalkylalkyl of 4 to 10 carbon atoms in which the cycloalkyl is of 3 to 8 carbon atoms and the alkyl of 1 to 3 carbon atoms, R' is a radical of the formula ##SPC16## in which Y and Y' are the same or different and represent hydrogen, halo of atomic weight of 18 to 36, alkyl having from 1 to 2 carbon atoms, alkoxy having from 1 to 2 carbon atoms, or one of Y and Y' is trifluoromethyl while the other is hydrogen, or a radical of the formula ##SPC17## in which Y" is hydrogen, halo of atomic weight of from 18 to 36 or alkyl of 1 to 3 carbon atoms.
Claim 2
Dependent Claim
139 words
A compound of the formula ##SPC15## wherein: R is lower alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 8 carbon atoms or cycloalkylalkyl of 4 to 10 carbon atoms in which the cycloalkyl is of 3 to 8 carbon atoms and the alkyl of 1 to 3 carbon atoms, R' is a radical of the formula ##SPC16## in which Y and Y' are the same or different and represent hydrogen, halo of atomic weight of 18 to 36, alkyl having from 1 to 2 carbon atoms, alkoxy having from 1 to 2 carbon atoms, or one of Y and Y' is trifluoromethyl while the other is hydrogen, or a radical of the formula ##SPC17## in which Y" is hydrogen, halo of atomic weight of from 18 to 36 or alkyl of 1 to 3 carbon atoms.
Claim 3
Dependent Claim
13 words
A compound of claim 1 in which R' is phenyl or substituted phenyl.
Claim 4
Dependent Claim
10 words
A compound of claim 2 in which R' is phenyl.
Claim 5
Dependent Claim
10 words
A compound of claim 1 in which R is alkyl.
Claim 6
Dependent Claim
10 words
A compound of claim 4 in which R is isopropyl.
Claim 7
Dependent Claim
10 words
A compound of claim 2 in which R is isopropyl.
Claim 8
Dependent Claim
10 words
The compound of claim 6 in which R' is phenyl.
Claim 9
Dependent Claim
10 words
The compound of claim 6 in which R' is 4-fluorophenyl.
Claim 10
Dependent Claim
10 words
A compound of claim 1 in which R is cyclopropylmethyl.
Claim 11
Dependent Claim
8 words
The compound of claim 6 which is 1-isopropyl-4-phenyl-5,8-methano-5,6,7,8-tetrahydro-2(1H)-quinazolinone.
References Cited (Backward Citations)
US3563990A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-02 | 1979-09-01 | 1980-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-02 | 1983-09-01 | 1984-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-02 | 1987-09-01 | 1988-03-02 | $7700.00 | Window Closed / Lapsed |