US3715357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-oxides of benzylpyrimidines
Assignee: F Hoffmann La Roche AG
•
Filing: 1970-06-04
•
Granted: 1973-02-06
•
Expires: 1990-06-04
Abstract
Abstract Antibacterially active N-oxides of 2,4-diamino-benzylpyrimidines are described.
Inventors
- 👤 Bellet G Rey
- 👤 D Schwartz
- 👤 R Reiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:47
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/24; C07D239/28; C07D239/46; C07D239/48; C07D239/49
Claims Analysis
Total Claims: 11
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
11 words
A compound in accordance with claim 1, wherein R4 is hydrogen.
Claim 4
Dependent Claim
19 words
A compound in accordance with claim 2, i.e., the N3-oxide of 2,4-diamino-5-(3,4,5-trimethoxy-benzyl)pyrimidine and its pharmaceutically acceptable acid addition salts.
Claim 5
Dependent Claim
19 words
A compound in accordance with claim 2, i.e., the N3-oxide of 2,4-diamino-5-(3,4-dimethoxy-benzyl)pyrimidine and its pharmaceutically acceptable acid addition salts.
Claim 6
Dependent Claim
19 words
A compound in accordance with claim 2, i.e., the N3-oxide of 2,4-diamino-5-(3,4-methylenedioxy-benzyl)pyrimidine and its pharmaceutically acceptable acid addition salts.
Claim 7
Dependent Claim
11 words
A compound in accordance with claim 1, wherein R3 is hydrogen.
Claim 8
Dependent Claim
19 words
A compound in accordance with claim 6, i.e., the N3-oxide of 2,4-diamino-5-(4,5-dimethoxy-2-methyl-benzyl)pyrimidine and its pharmaceutically acceptable acid addition salts.
Claim 9
Dependent Claim
19 words
A compound in accordance with claim 6, i.e., the N3-oxide of 2,4-diamino-5-(2,4,5-trichloro-benzyl)pyrimidine and its pharmaceutically acceptable acid addition salts.
Claim 10
Dependent Claim
19 words
A compound in accordance with claim 6, i.e., the N3-oxide of 2,4-diamino-5-(2,4,5-trimethoxy-benzyl)pyrimidine and its pharmaceutically acceptable acid addition salts.
Claim 11
Dependent Claim
19 words
A compound in accordance with claim 6, i.e., the N3-oxide of 2,4-diamino-5-(2-bromo-4,5-methylenedioxy-benzyl)-pyrimidine and its pharmaceutically acceptable acid addition salts.
References Cited (Backward Citations)
US2518130A
Cited
US2500131A
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US3159628A
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US3341541A
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US3485840A
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US3382247A
Cited
US3464987A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |