US3780026A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biochemical aldosterone synthesis
Assignee: Shionogi and Co Ltd
•
Filing: 1972-08-09
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Granted: 1973-12-18
•
Expires: 1992-08-09
Abstract
Abstract CORTICOSTERONE OR ESTERS THEREOF IS TREATED WITH THE ENZYMES OF CORYNESPORA FUNGUS TO OBTAIN NOVEL 18-HYDROXYCORTICOSTERONE INTER- AND/OR INTRA-MOLECULAR ACETALS AND/OR ACYLATES THEREOF ACCOMPANIED WITH SEVERAL MONOHYDROXYCORTICOSTERONES, THEN THE PRODUCT IS TREATED WITH ACID OR MIXTURE OF ACID AND ACYLATING AGENT TO FORM ETHER BRIDGE BETWEEN POSITIONS 11 AND 18, FINALLY THE 18-DEOXYALDOSTERONE DERIVATIVES OBTAINED ARE TREATED AGAIN WITH THE ENZYMES OF DORYNESPORA FUNGUS TO PREPARE ALDOSTERONE, 18-DEHYDROALDOSTERONE, 9A-HYDROXY-11B,18-EPOXY-4ANDROSTENE-3,17-DIONE.
Inventors
- 👤 E Kondo
- 👤 T Mitsugi
- 👤 K Tori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:28
CPC Classifications
C; C12; C12P; C12P33/00; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911
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) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |