US3906031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel 9-fluorenylmethoxycarbonyl compounds
Assignee: Research Corp
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Filing: 1973-08-17
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Granted: 1975-09-16
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Expires: 1993-08-17
Abstract
Abstract The invention disclosed herein is generally concerned with novel 9-fluorenylmethyloxycarbonyl compounds and their reactions. More particularly, it is concerned with these novel compounds and their utility in the preparation of peptides, especially as blocking reagents for protection of free amino or carboxyl groups in amino acids or peptides. The compounds are also useful for separating racemic mixtures into their optical isomers.
Inventors
- 👤 Louis A Carpino
- 👤 Grace Y Han
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:33
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/22; C07D295/24; C07K; C07K1/00; C07K1/06; C07K1/061; C07K1/062; C07K1/063; C07K1/064; C07K5/00; C07K5/04; C07K5/06; C07K5/06191; C07C; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/06; C07C2603/10; C07C2603/12; C07C2603/18; Y; Y10; Y10S; Y10S930/00; Y10S930/01; Y10S930/15
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
7 words
A PROCTED AMINO ACID OF THE FORMULA
Claim 2
Dependent Claim
7 words
A PROCTED AMINO ACID OF THE FORMULA
Claim 3
Dependent Claim
13 words
A product as in claim 1 wherein the aromatic amino acid is phenylalanine.
References Cited (Backward Citations)
US3646107A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |