US3795666A
Expired / Lapsed
US
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Method of synthesizing peptides in the presence of a carbodiimide and of 3-hydroxy-4-oxo-3,4-dihydro-1,2,3-benzotriazine
Assignee: Hoechst AG
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Filing: 1970-07-28
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Granted: 1974-03-05
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Expires: 1990-07-28
Abstract
Abstract IMPROVED SYNTHESIS OF PEPTIDES BY THE CARBODIIMIDE METHOD IN WHICH AN AMINO-PROTECTED AMINO ACID OR PEPTIDE HAVING A REACTIVE CARBOXY GROUP IS CONDENSED WITH A CARBOXY-PROTECTED AMINO ACID OR PEPTIDE HAVING A REACTIVE AMINO IN THE PRESENCE OF 3-HYDROXY-4-OXO3,4-DIHYDRO-1,2,3-BENZOTRIAZINE AS WELL AS IN THE PRESENCE OF A CARBODIIMIDE SUCH AS DICYCLOHEXYL CARBODIIMIDE.
Inventors
- 👤 W Konig
- 👤 R Geiger
- 👤 E Wolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:22
CPC Classifications
C; C07; C07D; C07D253/00; C07D253/08; C07K; C07K1/00; C07K1/10; C07K14/00; C07K14/435; C07K14/665; C07K14/695; C07K5/00; C07K5/04; C07K5/06; C07K5/06086; A; A61; A61K; A61K38/00; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/55
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |