US2993039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparing nu-glycosides of aldose and ketose sugars
Assignee: Pharmacia and Upjohn Co
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Filing: 1959-11-06
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Granted: 1961-07-18
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Expires: 1979-11-06
Abstract
No abstract record available.
Inventors
- 👤 Schroeder William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:36
CPC Classifications
C; C07; C07H; C07H15/00; C07H15/02; C07H15/12; C07H19/00; C07H19/02; C07H19/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A PROCESS FOR PRODUCING N-GLYCOSIDES OF ALDOSE AND KETOSE SUGARS CONTAINING FROM 5 TO 7 CARBON ATOMS IN THE SUGR MOIETY WHICH COMPRISES REACTING IN AN INERT SOLVENT AN N-GLYCOSIDE-FORMING NITROGENOUS BASE WITH AN ACYLATED 5 TO 7 CARBON ATOM MONOSACCHARIDE SELECTED FROM THE CLASS CONSISTING OF 3-O-ACYLATED KETOSES, 2-O-ACYLATED ALDOSES, AND THE TRITYLE DERIVATIVES OF THOSE 3-O-ACYLATED KETOSES AND 2-O-ACYLATED ALDOSES WHICH CONTAIN PRIMARY HYDROXYL GROUPS, WHEREIN THE ACYL GROUP IS A SULFONACYL LEAVING GROUP, WHEREBY N-GLYCOSIDE FORMATION OCCURS WITH CONCURRENT EPIMERISATION OF THE MONOSACCHARIDE.
Claim 2
Dependent Claim
86 words
A PROCESS FOR PRODUCING N-GLYCOSIDES OF ALDOSE AND KETOSE SUGARS CONTAINING FROM 5 TO 7 CARBON ATOMS IN THE SUGR MOIETY WHICH COMPRISES REACTING IN AN INERT SOLVENT AN N-GLYCOSIDE-FORMING NITROGENOUS BASE WITH AN ACYLATED 5 TO 7 CARBON ATOM MONOSACCHARIDE SELECTED FROM THE CLASS CONSISTING OF 3-O-ACYLATED KETOSES, 2-O-ACYLATED ALDOSES, AND THE TRITYLE DERIVATIVES OF THOSE 3-O-ACYLATED KETOSES AND 2-O-ACYLATED ALDOSES WHICH CONTAIN PRIMARY HYDROXYL GROUPS, WHEREIN THE ACYL GROUP IS A SULFONACYL LEAVING GROUP, WHEREBY N-GLYCOSIDE FORMATION OCCURS WITH CONCURRENT EPIMERISATION OF THE MONOSACCHARIDE.
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) | 1964-07-17 | 1965-01-16 | 1965-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-17 | 1969-01-16 | 1969-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-17 | 1973-01-16 | 1973-07-18 | $7700.00 | Window Closed / Lapsed |