US3686238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glycerol esterified with 2-naphthyl-acetic acids and fatty acids
Assignee: Roche Palo Alto LLC
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Filing: 1970-01-19
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Granted: 1972-08-22
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Expires: 1990-01-19
Abstract
Abstract DRUG LIPID CONJUGATES REPRESENTED BY THE FORMULAS R1-O-CH2-CH(-O-R2)-CH2-O-R3, D1<(-O-CH2-CH(-CH2-O-R4)- O-), R5-O-CH2-CH(-O-R6)-COO-D2 IN THE FORMULAS, R1, R2 AND R3 EACH IS HYDROGEN, FATTY ACYL -CO-D3 OR-D4, WHEREIN D3 AND D4 AREREMAINDERS OF DRUG MOIETIES, AND ONE OF SAID R1, R2 AND R3 IS -CO-D3 OR-D4 AND AT LEAST ONE OTHER OF SAID R1, R2 AND R3 IS FATTY ACYL; R4 IS HYDROGEN OR FATTY ACYL; R5 AND R6 EACH IS HYDROGEN OR FATTY ACYL, AND AT LEAST ONE OF SAID R5 AND R6 IS FATTY ACYL; AND D1 AND D2 ARE REMAINDERS OF DRUG MOIETIES. THESE VOMPOUNDS EXHIBIT THE PHARMACEUTICAL UTILITIES OF THE PARENT DRUGS BUT HAVE ENHANCED AND PROLONGED ACTIVITY WHEN ORALLY ADMINISTERED.
Inventors
- 👤 Alejandro Zaffaroni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:36
CPC Classifications
C; C07; C07C; C07C59/00; C07C59/40; C07C59/42; C07C59/52; C07C69/00; C07C69/612; C07C69/616; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/22; C07C2603/26
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) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |