US3775397A
Expired / Lapsed
US
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Novel cytostatic 2',3'-dideoxy-3'-fluoropyrimidine-nucleosides
Assignee: Berlin-Brandenburg Academy of Sciences and Humanities
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Filing: 1969-11-12
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Granted: 1973-11-27
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Expires: 1989-11-12
Abstract
Abstract NOVEL 2'',3''-DIDEOXY - 3'' - FLUORO-PYRIMIDINE-NUCLEOSIDES CHARACTERIZED BY CYTOSTATIC ACTIVITY HAVING THE FORMULA: (2-(O=),4-(X=),5-R-1,2,3,4-TETRAHYDROPYRIMIDIN-1-YL)- CH<(-CH2-CH(-F)-CH(-CH2-OH)-O-) WHEREIN X DESIGNATES O, S OR NH AND R DESIGNATES HYDROGEN, ALKYL, SUBSTITUTED ALKYL, HALOGEN, OH OR SH, AND A PROCESS OF PREPARING HE SAME BY REACTING A CORRESPONDING AT THE OXYGEN OF THE 3''-OH GROUP SUBSTITUTED PYRIMIDINE NUCLEOSIDE WITH A FLUORINATING AGENT.
Inventors
- 👤 G Etzold
- 👤 R Hintsche
- 👤 P Langen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:20
CPC Classifications
C; C07; C07H; C07H19/00; C07H19/02; C07H19/04; C07H19/06
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |