US4038286A
Expired / Lapsed
US
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Racemates and optical isomers of 1-(1-phenylethyl)-1h-imidazole-5-carboylic acid derivatives
Assignee: Janssen Pharmaceutica NV
•
Filing: 1975-09-12
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Granted: 1977-07-26
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Expires: 1995-09-12
Abstract
Abstract Novel methods of preparing lower alkyl 1-(1-phenylethyl)-1H-imidazole-5-carboxylates in racemic as well as in optically pure isomeric form.
Inventors
- 👤 Leopold Fr. C. Roevens
- 👤 Jozef J. P. Heykants
- 👤 Walter A. M. Helsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:22
CPC Classifications
C; C07; C07D; C07D233/00; C07D233/54; C07D233/66; C07D233/90
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
1 words
dl-1-(1-Phenylethyl)-1H-imidazole-5-carboxamide.
Claim 2
Dependent Claim
1 words
dl-1-(1-Phenylethyl)-1H-imidazole-5-carboxamide.
Claim 3
Dependent Claim
1 words
(+)-1-(1-Phenylethyl)-1H-imidazole-5-carboxamide.
Claim 4
Dependent Claim
1 words
(+)-1-(1-Phenylethyl)-1H-imidazole-5-carboxamide.
Claim 5
Dependent Claim
1 words
(-)-1-(1-Phenylethyl)-1H-imidazole-5-caboxamide.
Claim 6
Dependent Claim
1 words
(-)-1-(1-Phenylethyl)-1H-imidazole-5-caboxamide.
Claim 7
Dependent Claim
1 words
dl-1-(1-Phenylethyl)-1H-imidazole-5-carbonitrile.
Claim 8
Dependent Claim
1 words
dl-1-(1-Phenylethyl)-1H-imidazole-5-carbonitrile.
Claim 9
Dependent Claim
1 words
(+)-1-(1-Phenylethyl)-1H-imidazole-5-carbonitrile.
Claim 10
Dependent Claim
1 words
(+)-1-(1-Phenylethyl)-1H-imidazole-5-carbonitrile.
Claim 11
Dependent Claim
1 words
(-)-1-(1-Phenylethyl)-1H-imidazole-5-carbonitrile.
Claim 12
Dependent Claim
1 words
(-)-1-(1-Phenylethyl)-1H-imidazole-5-carbonitrile.
References Cited (Backward Citations)
US3336326A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-25 | 1981-01-24 | 1981-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-25 | 1985-01-24 | 1985-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-25 | 1989-01-24 | 1989-07-26 | $7700.00 | Window Closed / Lapsed |