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US3856820A
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2-AMINOMETHYL DIBENZO (b,d) PYRANS
Assignee: GlaxoSmithKline LLC
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Filing: 1973-07-18
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Granted: 1974-12-24
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Expires: 1993-07-18
Abstract
Abstract The compounds of this invention are 2-aminomethyl dibenzo(b, d)pyrans having pharmacological activity such as central nervous system activity. A preferred compound of this invention is 2-(N, N-dimethylaminomethyl)-3-(1,2-dimethylheptyl)-1-hydroxy-7,8,9,10tetrahydro -6,6,9-trimethyl-6H-dibenzo(b,d)pyran.
Inventors
- 👤 B Loev
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:36
CPC Classifications
C; C07; C07C; C07C49/00; C07C49/76; C07C49/84; C07C43/00; C07C43/02; C07C43/20; C07C43/205; C07C43/2055; C07C45/00; C07C45/004
Claims Analysis
Total Claims: 5
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
57 words
A compound as claimed in claim 1 where ring A is a cyclohexene ring with the double bond at the 6a-10a position and R4 and R5 are lower alkyl of from one to four carbon atoms or are joined together with the nitrogen atom to which they are attached to form a piperidine or a pyrrolidine ring.
Claim 4
Dependent Claim
53 words
A compound as claimed in claim 2 where R1 is methyl in the 9-position, R2 is hydrogen or acetyl, R3 is a saturated hydrocarbon chain optionally branched with from one to three methyl groups, with R3 containing a total of from five to twelve carbon atoms and R4, R5 and R6 are methyl.
Claim 5
Dependent Claim
12 words
A compound as claimed in claim 3 being the compound 2(N,N-dimethylaminomethyl)-3-(1,2-dimethylheptyl)-1-hydroxy-7,8,9,10 -tetrahydro-6,6,9-trimethyl-6H-dibenzo(b,d)pyran.
References Cited (Backward Citations)
US3654312A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |