US3723453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-(beta-sulphonyloxy-ethyl)-imidazoles
Assignee: RECH ET APPLIC SCIENT ET MEDIC
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Filing: 1970-06-17
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Granted: 1973-03-27
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Expires: 1990-06-17
Abstract
Abstract 1-( Beta -Sulphonyloxy-ethyl)-imidazoles of formula WHERE R is hydrogen or lower alkyl and R1 is an alkyl radical, a cycloalkyl radical, a substituted or unsubstituted benzyl or phenyl radical; or a tetrahydrofurfuryl radical and their pharmaceutically acceptable acid addition salts show activity against a large variety of bacteria, mycetes, pathogenic moulds and protozoa and also show a good cytostatic action vitro. They are prepared by reacting the sodium salt of a corresponding free imidazole with a sulphonyloxy-ethyl halide or a corresponding 1( Beta -hydroxy-ethyl)-imidazole with a sulphonyl chloride.
Inventors
- 👤 Asta L Dall
- 👤 B Gradnik
- 👤 A Pedrazzoli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:53
CPC Classifications
C; C07; C07D; C07D233/00; C07D233/54; C07D233/66; C07D233/91; C07D233/92; C07D233/94
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
21 words
A member selected from the group consisting of (a) 1-( Beta -methylsulphonyloxy)-ethyl)-2-methyl-5-nitro-imidazole and (b) a pharmaceutically acceptable acid addition salt thereof.
Claim 2
Dependent Claim
3 words
1-( Beta -(methylsulphonyloxy)-ethyl)-5-nitro-imidazole
Claim 3
Dependent Claim
3 words
1-( Beta -(ethylsulphonyloxy-ethyl)-2-methyl-5-nitro-imidazole.
Claim 4
Dependent Claim
3 words
1-( Beta -(n-butylsulphonyloxy)-ethyl)-2methyl-5-nitro-imidazole.
Claim 5
Dependent Claim
3 words
1-( Beta -(1''-methyl-propylsulphonyloxy)-ethyl)-2-methyl-5-nitroimidazole.
Claim 6
Dependent Claim
3 words
1-( Beta (3''-methyl-butyl-sulphonyloxy)-ethyl)-2-methyl-5nitroimidazole.
Claim 7
Dependent Claim
3 words
1-( Beta -(n-dodecylsulphonyloxy)-ethyl)-2-methyl-5nitro-imidazole.
Claim 8
Dependent Claim
3 words
1-( Beta -(cyclopentyl-sulphonyloxy)-ethyl)-2-methyl-5nitroimidazole.
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) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |