US3784535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonapeptide intermediate to gonadotropin releasing hormone
Assignee: Abbott Laboratories
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Filing: 1971-09-13
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Granted: 1974-01-08
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Expires: 1991-09-13
Abstract
Abstract THE SYNTHESIS OF THE NONAPEPTIDE HIS-TRP-GLYLEU-ARG-PRO-GLY-AMIDE CARRYING EASILY REMOVED PROTECTIVE GROUPS ON THE SER, TYR, ARG AND OPTIONALLY ON THE HIS MOIETIES IS DESCRIBED. THE CORRSEPONDINGLY PROTECTED OCTAPEPTIDE IS USED AS THE STARTING MATERIAL. THE NONAPEPTIDE, UPON REMOVAL OF AN NA-PROTECTIVE GROUP ON THE HISTIDINE MOIETY IS AN IMPORTANT INTERMEDIATE FOR THE PREPARATION OF THE GONADOTROPIN-RELEASING HORMONE.
Inventors
- 👤 G Flouret
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:58
CPC Classifications
C; C07; C07K; C07K5/00; C07K5/04; C07K5/10; C07K5/1002; C07K5/1005; C07K7/00; C07K7/04; C07K7/23
Claims Analysis
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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) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |