Patent US4041037A successfully refreshed from Google Patents.
US4041037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antitumor derivatives of periodate-oxidized cytidine
Assignee: Wyeth LLC
•
Filing: 1976-06-21
•
Granted: 1977-08-09
•
Expires: 1996-06-21
Abstract
Abstract The reaction of the periodate oxidation product from inosine, adenosine, or cytidine with methanol or ethanol affords a product having activity against lymphocytic leukemia P388 in mice.
Inventors
- 👤 William Dvonch
- 👤 Harvey E. Alburn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:11
CPC Classifications
C; C07; C07H; C07H19/00; C07H19/02; C07H19/04; C07H19/06; C07H19/16
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
12 words
A compound of the formula ##STR4## wherein R is methyl or ethyl.
Claim 2
Dependent Claim
12 words
A compound of the formula ##STR4## wherein R is methyl or ethyl.
Claim 3
Dependent Claim
10 words
A compound as defined in claim 1 which is 4-amino-1-[3(5)-hydroxy-6-hydroxymethyl-5(3)-methoxy-p-dioxan-2-yl]-2H-pyrimidin-2-one.
Claim 4
Dependent Claim
10 words
A compound as defined in claim 1 which is 4-amino-1-[3(5)-ethoxy-5(3)hydroxy-6-hydroxymethyl-p-dioxan-2-yl]-2H-pyrimidin-2-one.
References Cited (Backward Citations)
US3185690A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-08 | 1981-02-07 | 1981-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-08 | 1985-02-07 | 1985-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-08 | 1989-02-07 | 1989-08-09 | $7700.00 | Window Closed / Lapsed |