US3836656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted purines as hypolipidemics
Assignee: Sandoz AG
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Filing: 1972-02-07
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Granted: 1974-09-17
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Expires: 1992-02-07
Abstract
Abstract THE D-ISOMER OF OPTICALLY ACTIVE 3-(6AMINO-9H-PURIN9-YL)-1,2; PROPANEDIOL IS PREPARED FROM D-9-(2-SUBSTITUTED AND 2,2-DISUBSTITUTED -1,3-DIOXOL-4-YL)METHYL)ADENINES AND BOTH THE PRODUCT ISOMER AND STARTING MATERIALS ARE USFUL AS HYPOLIDEMIC AGENTS.
Inventors
- 👤 M Buzzolini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:31
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/495; A61K31/505; A61K31/519; A61K31/52
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) | 1977-09-16 | 1978-03-18 | 1978-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-16 | 1982-03-18 | 1982-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-16 | 1986-03-18 | 1986-09-17 | $7700.00 | Window Closed / Lapsed |