US4088646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
5-Fluorouracil derivatives
Assignee: Asahi Kasei Corp
•
Filing: 1976-01-22
•
Granted: 1978-05-09
•
Expires: 1996-01-22
Abstract
Abstract A compound represented by the formulae: ##STR1## wherein R 1 and R 2 are as defined hereinafter, useful as an anti-cancer or anti-tumor agent.
Inventors
- 👤 Torao Ishida
- 👤 Daikichi Nishimura
- 👤 Toshiaki Sugawara
- 👤 Tadaaki Ooka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:29
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/24; C07D239/28; C07D239/46; C07D239/52; C07D239/54; C07D239/545; C07D239/553
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
20 words
A compound represented by the formula: ##STR6## wherein R 2 represents alkyl or alkenyl having 9 to 23 carbon atoms.
Claim 2
Dependent Claim
20 words
A compound represented by the formula: ##STR6## wherein R 2 represents alkyl or alkenyl having 9 to 23 carbon atoms.
Claim 3
Dependent Claim
27 words
The compound as claimed in claim 1, wherein R 2 is nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl, eicosanyl, heneicosanyl, docosanyl or tricosanyl.
Claim 4
Dependent Claim
15 words
The compound as claimed in claim 1, wherein R 2 is pentadecyl, hexadecyl or heptadecyl.
References Cited (Backward Citations)
US2949451A
Cited
US3971784A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-08 | 1981-11-07 | 1982-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-08 | 1985-11-07 | 1986-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-08 | 1989-11-07 | 1990-05-09 | $7700.00 | Window Closed / Lapsed |