US3920640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acylamino-cephem-carboxylic acids and process for preparing them
Assignee: Hoechst AG
•
Filing: 1973-05-02
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Granted: 1975-11-18
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Expires: 1993-05-02
Abstract
Abstract IN WHICH R1, R2 and R3 represent hydrogen or lower alkyl groups and R1 and R2 may form together an alkylene group which may be substituted, R4 represents a linear or branched alkyl radical of 1 to 5 carbon atoms, a cyclo-alkyl radical of 3 to 7 carbon atoms which may be interrupted by heteroatoms, X represents a single bond or NH, A represents a phenylene or thienylene group which may be substituted and Y represents a single bond or oxygen, and their physiologically tolerated salts; the novel compounds have very good anti-bacterial properties. Acylamino-cephem-carboxylic acids of the general formula
Inventors
- 👤 Manfred Schorr
- 👤 Manfred Worm
- 👤 Elmar Schrinner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:56
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/06; C07D233/00; C07D233/04; C07D233/20; C07D233/22; C07D233/26; C07D333/00; C07D333/02; C07D333/04; C07D333/26; C07D333/38
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
6 words
AN ACYLAMINO-CEPHEM-CARBOXYLIC ACID OF THE FORMULA
Claim 2
Dependent Claim
6 words
AN ACYLAMINO-CEPHEM-CARBOXYLIC ACID OF THE FORMULA
Claim 3
Dependent Claim
4 words
3-Methyl-7-(4-amidino-phenylacetamino)- Delta 3-cephem-4-carboxylic acid.
Claim 4
Dependent Claim
4 words
3-Methyl-7-(4-amidino-phenylacetamino)- Delta 3-cephem-4-carboxylic acid.
Claim 5
Dependent Claim
4 words
3-Methyl-7-(4-amidino-phenoxyacetamino)- Delta 3-cephem-4-carboxylic acid.
Claim 6
Dependent Claim
4 words
3-Methyl-7-(4-amidino-phenoxyacetamino)- Delta 3-cephem-4-carboxylic acid.
Claim 7
Dependent Claim
4 words
3-Methyl-7-(5-amidino-2-thienylacetamino)- Delta 3-cephem-4-carboxylic acid.
Claim 8
Dependent Claim
4 words
3-Methyl-7-(5-amidino-2-thienylacetamino)- Delta 3-cephem-4-carboxylic acid.
Claim 9
Dependent Claim
4 words
3-Methyl-7-(4-(2-imidazolinyl)-phenylacetamino)- Delta 3-cephem-4-carboxylic acid.
Claim 10
Dependent Claim
4 words
3-Methyl-7-(4-(2-imidazolinyl)-phenylacetamino)- Delta 3-cephem-4-carboxylic acid.
Claim 11
Dependent Claim
4 words
3-Methyl-7-(4-(1,4,5,6-tetrahydro-2-pyrimidyl)-phenylacetamino)- Delta 3-cephem-4-carboxylic acid.
Claim 12
Dependent Claim
4 words
3-Methyl-7-(4-(1,4,5,6-tetrahydro-2-pyrimidyl)-phenylacetamino)- Delta 3-cephem-4-carboxylic acid.
Claim 13
Dependent Claim
4 words
3-Methyl-7-(4-(2-imidazolinyl)-phenoxyacetamino)- Delta 3-cephem-4-carboxylic acid.
Claim 14
Dependent Claim
4 words
3-Methyl-7-(4-(2-imidazolinyl)-phenoxyacetamino)- Delta 3-cephem-4-carboxylic acid.
Claim 15
Dependent Claim
4 words
3-Methyl-7-(4-(1,4,5,6-tetrahydro-2-pyrimidyl)-phenoxyacetamino)- Delta 3-cephem-4-carboxylic acid.
Claim 16
Dependent Claim
4 words
3-Methyl-7-(4-(1,4,5,6-tetrahydro-2-pyrimidyl)-phenoxyacetamino)- Delta 3-cephem-4-carboxylic acid.
Claim 17
Dependent Claim
4 words
3-Methyl-7-(4-guanidino-phenylacetamino)- Delta 3-cephem-4-carboxylic acid.
Claim 18
Dependent Claim
4 words
3-Methyl-7-(4-guanidino-phenylacetamino)- Delta 3-cephem-4-carboxylic acid.
Claim 19
Dependent Claim
3 words
3-Methyl-7-(4-N,N''-tetramethylene-amidino-phenylacetamino)-Delta 3-cephem-4-carboxylic acid.
Claim 20
Dependent Claim
3 words
3-Methyl-7-(4-N,N''-tetramethylene-amidino-phenylacetamino)-Delta 3-cephem-4-carboxylic acid.
Claim 21
Dependent Claim
4 words
3-Methyl-7-(4-(N-methyl-1,4,5,6-tetrahydro-2-pyrimidyl)-phenoxyacetamino)- Delta 3-cephem-4-carboxylic acid.
Claim 22
Dependent Claim
4 words
3-Methyl-7-(4-(N-methyl-1,4,5,6-tetrahydro-2-pyrimidyl)-phenoxyacetamino)- Delta 3-cephem-4-carboxylic acid.
Claim 23
Dependent Claim
4 words
3-Ethyl-7-(4-guanidino-phenylacetamido)- Delta 3-cephem-4-carboxylic acid.
Claim 24
Dependent Claim
4 words
3-Ethyl-7-(4-guanidino-phenylacetamido)- Delta 3-cephem-4-carboxylic acid.
Claim 25
Dependent Claim
4 words
3-Ethyl-7-(4-(2-imidazolinyl)-phenylacetamido)- Delta 3-cephem-4-carboxylic acid.
Claim 26
Dependent Claim
4 words
3-Ethyl-7-(4-(2-imidazolinyl)-phenylacetamido)- Delta 3-cephem-4-carboxylic acid.
Claim 27
Dependent Claim
4 words
3-Ethyl-7-(4-(N-methYl-1,4,5,6-tetrahydro-2-pyrimidyl)-phenoxyacetamido)- Delta 3-cephem-4-carboxylic acid.
Claim 28
Dependent Claim
4 words
3-Ethyl-7-(4-(N-methYl-1,4,5,6-tetrahydro-2-pyrimidyl)-phenoxyacetamido)- Delta 3-cephem-4-carboxylic acid.
Claim 29
Dependent Claim
4 words
3-Isopropyl-7-(4-(2-imidazolinyl)-phenylacetamido)- Delta 3-cephem-4-carboxylic acid.
Claim 30
Dependent Claim
4 words
3-Isopropyl-7-(4-(2-imidazolinyl)-phenylacetamido)- Delta 3-cephem-4-carboxylic acid.
Claim 31
Dependent Claim
4 words
3-Ethyl-7-(4-amidino-phenylacetamido)- Delta 3-cephem-4-carboxylic acid.
Claim 32
Dependent Claim
4 words
3-Ethyl-7-(4-amidino-phenylacetamido)- Delta 3-cephem-4-carboxylic acid.
Claim 33
Dependent Claim
4 words
3-Ethyl-7-(4-amidino-phenoxyacetamido)- Delta 3-cephem-4-carboxylic acid.
Claim 34
Dependent Claim
4 words
3-Ethyl-7-(4-amidino-phenoxyacetamido)- Delta 3-cephem-4-carboxylic acid.
Claim 35
Dependent Claim
4 words
3-Isopropyl-7-(4-amidino-phenylacetamido)- Delta 3-cephem-4-carboxylic acid.
Claim 36
Dependent Claim
4 words
3-Isopropyl-7-(4-amidino-phenylacetamido)- Delta 3-cephem-4-carboxylic acid.
Claim 37
Dependent Claim
4 words
3-Isopropyl-7-(4-amidino-phenoxyacetamido)- Delta 3-cephem-4-carboxylic acid.
Claim 38
Dependent Claim
4 words
3-Isopropyl-7-(4-amidino-phenoxyacetamido)- Delta 3-cephem-4-carboxylic acid.
References Cited (Backward Citations)
US3749711A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-17 | 1979-05-19 | 1979-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-17 | 1983-05-19 | 1983-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-17 | 1987-05-19 | 1987-11-18 | $7700.00 | Window Closed / Lapsed |