US3334014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dihydrofusidic acid
Assignee: Leo Pharma AS
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Filing: 1962-11-14
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Granted: 1967-08-01
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Expires: 1982-11-14
Abstract
No abstract record available.
Inventors
- 👤 Godtfredsen Wagn Ole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:29
CPC Classifications
C; C07; C07J; C07J13/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
AS A NEW COMPOUDN, THE A,B-UNSATURATED MONOCARBOXYLIC ACID CALLED DIHYDROFUSIDIC ACID; HAVING ANTIBACTERIAL PROPERTIES; WHOSE SPECTRUM IN THE INFRA-RED REGION, USING THE POTASSIUM BROMIDE TECHNIQUE, EXHIBITS CHARACTERISTIC ABSORPTION BANDS AT THE FOLLOWING FREQUENCIES EXPRESSED IN MICRONS: 2.90, 5.82, 7.28, 7.95, 8.85, 9.31, 9.53, 9.71, AND 10.27; HAVING AT 220 MU A MOLAR EXTINCTION COEFFICIENT OF 8300 IN ETHANOL, AND NO CHARACTERISTIC ABSORPTION BANDS ABOVE THIS WAVE LENGTH; HAVING A SPECIFIC ROTATION (A)$20 OF MINUS 1/2* IN A 1 PERCENT SOLUTION IN CHLOROFORM; HAVING THE MOLECULAR FORMULA C31H50O6, AND CONTAINING IN THE MOLECULE A CYCLOPENTENOPOLYHYDROPHENANTHRENE RING SYSTEM WHICH IS SUBSTITUTED WITH TWO HYDROXY GROUPS, ONE ACETOXY GROUP, AND FOUR METHYL GROUPS, AND WHICH IN THE 17-POSITION IS CONNECTED BY A DOUBLE BOND WITH THE A-CARBON ATOM OF 5-METHYLHEPTANOIC ACID; FORMING WITH WATER THE CRYSTALLINE HYDRATE C31H50O6-1/2H2O WHICH MELTS AT 182 TO 184 DEGREES CENTIGRADE, AND FORMING SALTS WITH INORGANIC AND ORGANIC BASES.
Claim 2
Dependent Claim
151 words
AS A NEW COMPOUDN, THE A,B-UNSATURATED MONOCARBOXYLIC ACID CALLED DIHYDROFUSIDIC ACID; HAVING ANTIBACTERIAL PROPERTIES; WHOSE SPECTRUM IN THE INFRA-RED REGION, USING THE POTASSIUM BROMIDE TECHNIQUE, EXHIBITS CHARACTERISTIC ABSORPTION BANDS AT THE FOLLOWING FREQUENCIES EXPRESSED IN MICRONS: 2.90, 5.82, 7.28, 7.95, 8.85, 9.31, 9.53, 9.71, AND 10.27; HAVING AT 220 MU A MOLAR EXTINCTION COEFFICIENT OF 8300 IN ETHANOL, AND NO CHARACTERISTIC ABSORPTION BANDS ABOVE THIS WAVE LENGTH; HAVING A SPECIFIC ROTATION (A)$20 OF MINUS 1/2* IN A 1 PERCENT SOLUTION IN CHLOROFORM; HAVING THE MOLECULAR FORMULA C31H50O6, AND CONTAINING IN THE MOLECULE A CYCLOPENTENOPOLYHYDROPHENANTHRENE RING SYSTEM WHICH IS SUBSTITUTED WITH TWO HYDROXY GROUPS, ONE ACETOXY GROUP, AND FOUR METHYL GROUPS, AND WHICH IN THE 17-POSITION IS CONNECTED BY A DOUBLE BOND WITH THE A-CARBON ATOM OF 5-METHYLHEPTANOIC ACID; FORMING WITH WATER THE CRYSTALLINE HYDRATE C31H50O6-1/2H2O WHICH MELTS AT 182 TO 184 DEGREES CENTIGRADE, AND FORMING SALTS WITH INORGANIC AND ORGANIC BASES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |