US3728362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
(3-methyl-5-carboxy-2-pentenyl)quinones
Assignee: Takeda Pharmaceutical Co Ltd
•
Filing: 1971-02-08
•
Granted: 1973-04-17
•
Expires: 1991-02-08
Abstract
Abstract The present invention relates to (3-methyl-5 carboxy-2-pentenyl) quinones, lower alkyl esters and pharmaceutically acceptable salts thereof. The compunds are useful as anti-inflammatory agents.
Inventors
- 👤 H Morimoto
- 👤 M Watanabe
- 👤 I Imada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:37
CPC Classifications
C; C07; C07C; C07C66/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
16 words
A quinone derivative as claimed in claim 1, wherein each of X and X'' is methyl.
Claim 2
Dependent Claim
18 words
A quinone derivative as claimed in claim 1, wherein X and X'', taken together, represent -CH CH-CH CH-.
Claim 3
Dependent Claim
14 words
A quinone derivative as claimed in claim 1, wherein the quinone derivative is 2,3,5-trimethyl-6-(3-methyl-5-methoxycarbonyl-2-pentenyl)-1,4-benzoquinone.
Claim 4
Dependent Claim
14 words
A quinone derivative as claimed in claim 1, wherein the quinone derivative is 2,3,5-trimethyl-6-(5-carboxy-3-methyl-2-pentenyl)-1,4-benzoquinone.
Claim 5
Dependent Claim
15 words
A quinone derivative as claimed in claim 1, wherein the quinone derivative is 2,3-dimethoxy-5-methyl-6-(3-methyl-5-methoxycarbonyl-2-pentenyl)-1,4 -benzoquinone.
Claim 6
Dependent Claim
14 words
A quinone derivative as claimed in claim 1, wherein the quinone derivative is 2,3-dimethoxy-5-methyl-6-(5-carboxy-3-methyl-2-pentenyl)-1,4-benzoquinone.
Claim 7
Dependent Claim
14 words
A quinone derivative as claimed in claim 1, wherein the quinone derivative is 2-methyl-3-(3-methyl-5-methoxy-carbonyl-2-pentenyl)-1,4-naphthoquinone.
Claim 8
Dependent Claim
14 words
A quinone derivative as claimed in claim 1, wherein the quinone derivative is 2-methyl-3-(5-carboxy-3-methyl-2-pentenyl)-1,4-naphthoquinone.
Claim 9
Dependent Claim
15 words
A quinone derivative as claimed in claim 1, wherein the quinone derivative is 2,3-dimethoxy-5-methyl-6-(5-ethoxycarbonyl-3-methyl-2-pentenyl)-1,4 -benzoquinone.
References Cited (Backward Citations)
US2398418A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |