US3758456A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beta d driboheptofuranosyl nucleosides
Assignee: Roche Palo Alto LLC
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Filing: 1971-07-16
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Granted: 1973-09-11
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Expires: 1991-07-16
Abstract
Abstract NOVEL B-D-RIBOHEPTOFURANOSYL NUCLEOSIDES AND METHODS OF PREPARING SUCH COMPOUNDS. THE COMPOUNDS ARE GENERALLY PREPARED VIA A WITTIG TYPE REACTION WITH THE CORRESPONDING KNOWN 5''-ALDEHYDE RIBOFURANOSYL NUCLEOSIDE, THEREBY YIELDING THE CORRESPONDING 5'', 6''-DIDEOXY-BD-RIBO-HEPTO-5''-ENOFURANOSYLURONATE ESTER NUCLEOSIDE OR 6'' - CYANO - 5'',6''-DIDEOXY-B-D-RIBO-HEPTO-5''-ENFORURANOSYL NUCLEOSIDE. DERIVATIVES OF THIS NUCLEOSIDES ARE THEN PREPARED BY A NUMBER OF SELECTIVE REACTIONS DESCRIBED HEREIN. THE NOVEL NUCLEOSIDES HAVE THE ABILITY TO INHIBIT THE GROWN OF MICROORGANISMS OR ARE INTERMEDIATES FOR SUCH COMPOUNDS.
Inventors
- 👤 P Bax
- 👤 M Henderson
- 👤 D Rammler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:11
CPC Classifications
C; C07; C07H; C07H19/00; C07H19/02; C07H19/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |