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Patent US4599198A successfully refreshed from Google Patents.
US4599198A
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Intermediates in polypeptide synthesis
Assignee: Pfizer Inc
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Filing: 1985-09-26
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Granted: 1986-07-08
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Expires: 2005-09-26
Abstract
Abstract Bis(t-butoxycarbonyl) derivatives of phenylalanylhistidine as intermediates in the synthesis of rennin inhibiting polypeptides.
Inventors
- 👤 Dennis J. Hoover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:07
CPC Classifications
C; C07; C07K; C07K7/00; C07K7/04; C07K7/06; C07K5/00; C07K5/02; C07K5/0227; C07K5/04; C07K5/06; C07K5/06008; C07K5/06078; A; A61; A61K; A61K38/00; Y; Y10; Y10S; Y10S530/00; Y10S530/86
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
19 words
A compound of the formula ##STR15## wherein R 1 is selected from the group consisting of hydrogen and methyl.
Claim 2
Dependent Claim
19 words
A compound of the formula ##STR15## wherein R 1 is selected from the group consisting of hydrogen and methyl.
Claim 3
Dependent Claim
10 words
The compound of claim 1, wherein R 1 is hydrogen.
Claim 4
Dependent Claim
10 words
The compound of claim 1, wherein R 1 is methyl.
References Cited (Backward Citations)
US4479941A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-07-07 | 1990-01-06 | 1990-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-07 | 1994-01-06 | 1994-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-07 | 1998-01-06 | 1998-07-08 | $7700.00 | Window Closed / Lapsed |