Patent US4076820A successfully refreshed from Google Patents.
US4076820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Benzoquinolizines and hypotensive compositions containing them
Assignee: John Wyeth and Brother Ltd
•
Filing: 1976-05-13
•
Granted: 1978-02-28
•
Expires: 1996-05-13
Abstract
Abstract The invention relates to novel benzoquinolizines of the general formula (I) ##STR1## and the pharmaceutically acceptable acid addition salts thereof, wherein R 1 and R 2 which may be the same or different, each represent hydrogen, lower alkyl, lower alkoxy or halogen, R 3 represents hydrogen, lower alkyl or aryl and R 4 represents --SO 2 R 5 (where R 5 is lower alkyl or aryl, --CONH 2 or --CXNHR 6 (where X is oxygen or sulphur and R 6 is aryl or aryl.CO.--). The compounds have hypotensive activity.
Inventors
- 👤 John Leheup Archibald
- 👤 John Lambert Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:52
CPC Classifications
C; C07; C07D; C07D455/00; C07D455/03; C07D455/04; C07D455/06
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
99 words
A compound selected from the group consisting of a benzoquinolizine of formula ##STR7## and a pharmaceutically acceptable acid addition salt thereof, wherein R 1 and R 2 each represents a member from the group consisting of hydrogen, lower alkyl, lower alkoxy and halogen, R 3 represents a member of the group consisting of hydrogen, lower alkyl and aryl, R 4 represents --SO 2 R 5 (wherein R 5 represents lower alkyl or aryl), and aryl represents phenyl and mono-substituted phenyl, wherein the substituents are selected from halogen, alkoxy, lower alkyl, methylenedioxy, ethylenedioxy, amino, lower alkylamino, dilower alkylamino and trifluoromethyl.
Claim 2
Dependent Claim
99 words
A compound selected from the group consisting of a benzoquinolizine of formula ##STR7## and a pharmaceutically acceptable acid addition salt thereof, wherein R 1 and R 2 each represents a member from the group consisting of hydrogen, lower alkyl, lower alkoxy and halogen, R 3 represents a member of the group consisting of hydrogen, lower alkyl and aryl, R 4 represents --SO 2 R 5 (wherein R 5 represents lower alkyl or aryl), and aryl represents phenyl and mono-substituted phenyl, wherein the substituents are selected from halogen, alkoxy, lower alkyl, methylenedioxy, ethylenedioxy, amino, lower alkylamino, dilower alkylamino and trifluoromethyl.
Claim 3
Dependent Claim
75 words
A compound selected from the group consisting of a benzoquinolizine of formula ##STR8## and a pharmaceutically acceptable acid addition salt thereof, wherein R 1 and R 2 each represents a member from the group consisting of hydrogen, lower alkyl, lower alkoxy and halogen, R 3 represents a member of the group consisting of hydrogen, lower alkyl and phenyl, R 4 represents --SO 2 R 5 (wherein R 5 represents lower alkyl, phenyl and lower alkylphenyl).
Claim 4
Dependent Claim
75 words
A compound selected from the group consisting of a benzoquinolizine of formula ##STR8## and a pharmaceutically acceptable acid addition salt thereof, wherein R 1 and R 2 each represents a member from the group consisting of hydrogen, lower alkyl, lower alkoxy and halogen, R 3 represents a member of the group consisting of hydrogen, lower alkyl and phenyl, R 4 represents --SO 2 R 5 (wherein R 5 represents lower alkyl, phenyl and lower alkylphenyl).
Claim 5
Dependent Claim
10 words
A compound as claimed in claim 2, which is 2-methanesulphonamido-1,3,4,6,7,11b-hexahydro-2H-benzo[a]quinolizine.
Claim 6
Dependent Claim
10 words
A compound as claimed in claim 2 which is 2-ethanesulphonamido-1,3,4,6,7,11b-hexahydro-2H-benzo[a]quinolizine.
Claim 7
Dependent Claim
10 words
A compound as claimed in claim 2 which is 2-phenylsulphonamido-1,3,4,6,7,11b-hexahydro-2H-benzo[a]quinolizine.
Claim 8
Dependent Claim
91 words
A hypotensive composition comprising a hypotensively effective amount of a compound selected from the group consisting of a benzoquinolizine of formula ##STR9## and a pharmaceutically acceptable acid addition salt thereof, wherein R 1 and R 2 each represents a member from the group consisting of hydrogen, lower alkyl, lower alkoxy and halogen, R 3 represents a member of the group consisting of hydrogen, lower alkyl and phenyl, R 4 represents --SO 2 R 5 (wherein R 5 represents lower alkyl, phenyl and lower alkylphenyl), in association with a pharmaceutically acceptable carrier.
Claim 9
Dependent Claim
91 words
A hypotensive composition comprising a hypotensively effective amount of a compound selected from the group consisting of a benzoquinolizine of formula ##STR9## and a pharmaceutically acceptable acid addition salt thereof, wherein R 1 and R 2 each represents a member from the group consisting of hydrogen, lower alkyl, lower alkoxy and halogen, R 3 represents a member of the group consisting of hydrogen, lower alkyl and phenyl, R 4 represents --SO 2 R 5 (wherein R 5 represents lower alkyl, phenyl and lower alkylphenyl), in association with a pharmaceutically acceptable carrier.
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) | 1981-02-27 | 1981-08-29 | 1982-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-27 | 1985-08-29 | 1986-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-27 | 1989-08-29 | 1990-02-28 | $7700.00 | Window Closed / Lapsed |