US3607888A
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25-hydroxytachysterol3 25-hydroxydihydrotachysterol3 and methods for preparing same
Assignee: Wisconsin Alumni Research Foundation
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Filing: 1969-08-07
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Granted: 1971-09-21
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Expires: 1989-08-07
Abstract
Abstract The new compounds 25-hydroxytachysterol3, 25hydroxydihydrotachysterol3 and methods for preparing same. 25hydroxydihydrotachysterol3 is characterized by antirachitic activity and by its ability to induce bone mobilization and thereby increase serum calcium concentration indicating its application for the treatment of hypoparathyroidism. 25hydroxytachysterol3 is a valuable intermediate in the preparation of 25-hydroxydihydrotachysterol3.
Inventors
- 👤 Hector F Deluca
- 👤 Tatsuo Suda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:57
CPC Classifications
C; C07; C07C; C07C401/00; C07C2601/00; C07C2601/12; C07C2601/14; C07C2601/16; C07C2602/00; C07C2602/02; C07C2602/14; C07C2602/24
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
1 words
25-hydroxytachysterol3.
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) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |