Patent US1736293A successfully refreshed from Google Patents.
Patent US4054589A successfully refreshed from Google Patents.
US4054589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel 9-substituted phenyl-3,7-dimethyl-nona-2,4,6,8-tetraene esters
Assignee: Hoffmann La Roche Inc
•
Filing: 1975-09-15
•
Granted: 1977-10-18
•
Expires: 1995-09-15
Abstract
Abstract Novel 9-substituted phenyl-3,7-dimethyl-nona-2,4,6,8-tetraene derivatives useful as anti-tumor agents.
Inventors
- 👤 Werner Bollag
- 👤 Rudolf Ruegg
- 👤 Gottlieb Ryser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:32
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/01; C07C37/045; C07C205/00; C07C205/13; C07C205/20; C07C205/21; C07C205/22; C07C205/27; C07C205/35; C07C205/36; C07C205/37; C07C41/00; C07C41/01; C07C41/16; C07C41/18; C07C41/30; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/54; C07F9/5456
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
71 words
A compound of the formula: ##STR10## wherein R 1 and R 2 are halogen, lower alkyl or lower alkoxy, with the proviso that one of R 1 and R 2 is halogen; R 3 and R 5 are hydrogen, halogen or lower alkyl; with the proviso that one of R 3 and R 5 is other than halogen; R 4 is lower alkoxy; and R 6 is alkoxycarbonyl; and salts thereof.
Claim 2
Dependent Claim
71 words
A compound of the formula: ##STR10## wherein R 1 and R 2 are halogen, lower alkyl or lower alkoxy, with the proviso that one of R 1 and R 2 is halogen; R 3 and R 5 are hydrogen, halogen or lower alkyl; with the proviso that one of R 3 and R 5 is other than halogen; R 4 is lower alkoxy; and R 6 is alkoxycarbonyl; and salts thereof.
Claim 3
Dependent Claim
13 words
The compound of claim 1 wherein said compound is 9-(6-Chloro-4-methoxy-2,3-dimethyl-phenyl)-3,7-dimethyl-nona-2,4,6,8-tetraen-1-oic acid ethyl ester.
Claim 4
Dependent Claim
13 words
The compound of claim 1 wherein said compound is 9-(2-Chloro-4-methoxy-3,5,6-trimethyl-phenyl)-3,7-dimethyl-nona-2,4,6,8-tetraen-1-oic acid ethyl ester.
Claim 5
Dependent Claim
13 words
The compound of claim 1 wherein said compound is 9-(2,6-Dichloro-4-methoxy-phenyl)-3,7-dimethyl-nona-2,4,6,8-tetraen-1-oic acid ethyl ester.
Claim 6
Dependent Claim
13 words
The compound of claim 1 wherein said compound is 9-(2,5,6-Trichloro-4-methoxy-phenyl)-3,7-dimethyl-nona-2,4,6,8-tetraen-1-oic acid ethyl ester.
Claim 7
Dependent Claim
19 words
The compound of claim 1 wherein said compound of claim 1 wherein said compound is 9-(6-Chloro-4-methoxy-2,5-dimethyl-phenyl)-3,7-dimethyl-nona-2,4,6,8-tetraen-1-oic acid ethyl ester.
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) | 1980-10-17 | 1981-04-18 | 1981-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-17 | 1985-04-18 | 1985-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-17 | 1989-04-18 | 1989-10-18 | $7700.00 | Window Closed / Lapsed |