US3875238A
Expired / Lapsed
US
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Novel 2-benzoyl benzaldehyde compounds
Assignee: F Hoffmann La Roche AG
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Filing: 1974-05-06
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Granted: 1975-04-01
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Expires: 1994-05-06
Abstract
Abstract Novel 2(2-(1,3-diazacycloalk-2-enyl))benzophenone compounds and novel 1,3-diazacycloalkenyl(2,1-a)isoindole compounds having useful analgesic and psychostimulant properties are prepared inter alia by condensation of o-benzoylbenzaldehydes with aliphatic diamines.
Inventors
- 👤 Werner Metlesics
- 👤 Leo Henryk Sternbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:38
CPC Classifications
C; C07; C07D; C07D487/00; C07D487/02; C07D487/04; A; A61; A61K; A61K31/00; C07C; C07C45/00; C07C45/27; C07C45/29; C07C45/41; C07C49/00; C07C49/76; C07C49/86; C07D209/00; C07D209/02; C07D209/44; C07D233/00; C07D233/04; C07D233/20; C07D233/22
Claims Analysis
Total Claims: 8
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
20 words
The compound according to claim 1 wherein each of R1, R2, R3, and R4 are hydrogen, i.e., the compound 2-benzoylbenzaldehyde.
Claim 4
Dependent Claim
26 words
The compound according to claim 1 wherein R1, R2, and R3 are each hydrogen and R4 is chloro and is in p-position, i.e., the compound 2-(p-chlorobenzoyl)benzaldehyde.
Claim 5
Dependent Claim
26 words
The compound according to claim 1 wherein R1, R2, and R3 are each hydrogen and R4 is methoxy and is in p-position, i.e., the compound 2-(p-anisoyl)benzaldehyde.
Claim 6
Dependent Claim
26 words
The compound according to claim 1 wherein R1, R3, and R4 are each hydrogen and R2 is chloro and is in 4-position, i.e., the compound 2-benzoyl-4-chlorobenaldehyde.
Claim 7
Dependent Claim
26 words
The compound according to claim 1 wherein R1, R2, and R3 are each hydrogen and R4 is bromo and is in p-position, i.e., the compound 2-(p-bromobenzoyl)benaldehyde.
Claim 8
Dependent Claim
26 words
The compound according to claim 1 wherein R1, R2, and R3 are each hydrogen and R4 is chloro and is in o-position, i.e., the compound 2-(o-chlorobenzoyl)benzaldehyde.
References Cited (Backward Citations)
US2993073A
Cited
US3408366A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |