US3853954A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tyrosine derivatives
Assignee: F Hoffmann La Roche AG
•
Filing: 1971-11-03
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Granted: 1974-12-10
•
Expires: 1991-11-03
Abstract
Abstract The L-antipode of 4-methoxy-m-tyrosine and lower alkyl esters thereof which are useful as anti-parkinson agents.
Inventors
- 👤 A Kaiser
- 👤 W Koch
- 👤 M Scheer
- 👤 U Wolcke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:24
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/185; A61K31/19; A61K31/195
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
5 words
THE L-ANTIPODE OF THE FORMULA:
Claim 2
Dependent Claim
5 words
THE L-ANTIPODE OF THE FORMULA:
Claim 3
Dependent Claim
9 words
The antipode of claim 1 wherein R is hydrogen.
Claim 4
Dependent Claim
11 words
The antipode of claim 2 wherein said antipode is 4-methoxy-L-m-tyrosine hydrochloride.
Claim 5
Dependent Claim
10 words
The antipode of claim 2 wherein said antipode is 4-methoxy-L-m-tyrosine.
Claim 6
Dependent Claim
10 words
The antipode of claim 1 wherein R is lower alkyl.
Claim 7
Dependent Claim
12 words
The antipode of claim 5 wherein said antipode is 4-methoxy-L-m-tyrosine methyl ester.
Claim 8
Dependent Claim
5 words
The L-antipode of the formula:
Claim 9
Dependent Claim
5 words
The L-antipode of the formula:
Claim 10
Dependent Claim
14 words
The antipode of claim 7 wherein said antipode is N-acetyl 3-(3-formyloxy-4-methoxy phenyl)-L-alanine methyl ester.
Claim 11
Dependent Claim
10 words
The antipode of claim 1 wherein said antipode is N,0-dicetyl-4-methoxy-L-m-tyrosine.
Claim 12
Dependent Claim
11 words
The antipode of claim 7 wherein said antipode is N-acetyl-3-(3-formyloxy-4-methoxy phenyl)-L-alanine.
Claim 13
Dependent Claim
12 words
The antipode of claim 7 wherein said antipode is N,0-diacetyl-4-methoxy-L-m-tyrosine ethyl ester.
Claim 14
Dependent Claim
10 words
The antipode of claim 7 wherein said antipode is 0-acetyl-N-formyl-4-methoxy-L-m-tyrosine.
Claim 15
Dependent Claim
5 words
An L-antipode of the formula:
Claim 16
Dependent Claim
5 words
An L-antipode of the formula:
Claim 17
Dependent Claim
13 words
The antipode of claim 13 wherein said antipode is N-acetyl-3-(3-formyl-4-methoxy phenyl)-L-alanine methyl ester.
Claim 18
Dependent Claim
13 words
The antipode of claim 13 wherein said antipode is N-acetyl-3-(3-formyl-4-methoxy phenyl)-L-alanine ethyl ester.
Claim 19
Dependent Claim
11 words
The antipode of claim 13 wherein said antipode is N-acetyl-3-(3-acetyl-4-methoxy phenyl)-L-alanine.
Claim 20
Dependent Claim
11 words
The antipode of claim 13 wherein said antipode is 3-(3-acetyl-4-methoxy phenyl)-N-formyl-L-alanine.
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) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |