US3923792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfacytosine derivatives
Assignee: F Hoffmann La Roche AG
•
Filing: 1974-06-19
•
Granted: 1975-12-02
•
Expires: 1994-06-19
Abstract
Abstract N1-(1,2-dihydro-2-oxo-4-pyrimidinyl)sulfanilamides, bearing a lower alkyl, cycloalkyl or cycloalkyl-lower alkyl substituent in the 1-position, prepared by reaction of the corresponding 1substituted-1,2-dihydro-2-oxo-4-aminopyrimidine and N-acylated sulfanilyl chloride with subsequent hydrolysis, are described. The end products are useful as antibacterial agents.
Inventors
- 👤 Harry Allen Albrecht
- 👤 John Thomas Plati
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:28
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/20; C07D239/22; C07C; C07C275/00; C07C275/04; C07C275/18; C07C275/26; C07D239/24; C07D239/28; C07D239/46; C07D239/47; C07D239/56; C07D239/69; C07C2601/00; C07C2601/02; C07C2601/06; C07C2601/08; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 3
Dependent Claim
8 words
The compound of claim 1 which is N1-1-cyclopropylmethyl-1,2-dihydro-2-oxo-4-pyrimidinyl)-sulfanilamide.
Claim 4
Dependent Claim
8 words
The compound of claim 1 which is N1-(1-cyclopentyl-1,2-dihydro-2-oxo-4-pyrimidinyl)-sulfanilamide.
Claim 5
Dependent Claim
8 words
The compound of claim 1 which is N1-(1-cyclopropyl-1,2-dihydro-2-oxo-4-pyrimidinyl)-sulfanilamide.
Claim 6
Dependent Claim
8 words
The compound of claim 1 which is N1-(1-cyclohexyl-1,2-dihydro-2-oxo-4-pyrimidinyl)-sulfanilamide.
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) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |