US4060689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinylbenzyl esters of n-boc-amino acids
Assignee: Warner Chilcott Pharmaceuticals Inc
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Filing: 1976-12-17
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Granted: 1977-11-29
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Expires: 1996-12-17
Abstract
Abstract There is described herein the preparation of vinylbenzyl esters of N-BOC amino acids which upon polymerization with styrene and divinylbenzene provide insoluble polymers useful as starting materials for the solid phase synthesis of peptides.
Inventors
- 👤 Nicholas D. Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:38
CPC Classifications
C; C07; C07C; C07C271/00; C07C271/06; C07C271/08; C07C271/10; C07C271/22; C08; C08F; C08F12/00; C08F12/02; C08F12/04; C08F12/14; C08F12/26; C08F12/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
The vinylbenzyl ester of N-tertiarybutyloxy carbonyl-O-benzyl-L-threonine.
Claim 2
Dependent Claim
6 words
The vinylbenzyl ester of N-tertiarybutyloxy carbonyl-O-benzyl-L-threonine.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-11-28 | 1981-05-30 | 1981-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-28 | 1985-05-30 | 1985-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-28 | 1989-05-30 | 1989-11-29 | $7700.00 | Window Closed / Lapsed |