US3905984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pyridyl substituted thioalkyl-and oxyalkyl-thioureas and ureas
Assignee: Smith Kline & French Laboratories Ltd
•
Filing: 1974-03-13
•
Granted: 1975-09-16
•
Expires: 1994-03-13
Abstract
Abstract The compounds are pyridyl substituted thioalkyl-and oxyalkylthioureas and ureas which are inhibitors of histamine activity.
Inventors
- 👤 Graham John Durant
- 👤 John Colin Emmett
- 👤 Charon Robin Ganellin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:49
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/62; C07D213/70; C07D213/24; C07D213/28; C07D213/32; C07D213/36; C07D213/38; C07D213/63; C07D213/65; C07D213/72; C07D213/74; C07D231/00; C07D231/02; C07D231/10; C07D231/12; C07D233/00; C07D233/54; C07D233/66; C07D233/84; C07D233/90; C07D235/00; C07D235/02; C07D235/04; C07D235/06; C07D249/00; C07D249/02; C07D249/08; C07D249/10; C07D249/12; C07D261/00; C07D261/02; C07D261/06; C07D261/08; C07D263/00; C07D263/02; C07D263/30; C07D263/34; C07D263/46; C07D275/00; C07D275/02; C07D275/03; C07D277/00; C07D277/02; C07D277/20; C07D277/22; C07D277/26; C07D285/00; C07D285/01; C07D285/02; C07D285/04; C07D285/12; C07D285/125; C07D285/135; C07D471/00; C07D471/02; C07D471/04
Claims Analysis
Total Claims: 14
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
13 words
A compound of claim 1 wherein k is 1 and m is 2.
Claim 4
Dependent Claim
28 words
A compound of claim 1 in which X1 is hydrogen, methyl, bromo, hydroxyl or amino and X2 is hydrogen; Y and E are sulphur and R1 is methyl.
Claim 5
Dependent Claim
9 words
A compound of claim 1, said compound being N-methyl-N''-(2-((3-hydroxy-2-pyridyl)methylthio)ethyl)thiourea.
Claim 6
Dependent Claim
9 words
A compound of claim 1, said compound being M-methyl-N''-(2-((3-bromo-2-pyridyl)methylthio)ethyl)thiourea.
Claim 7
Dependent Claim
9 words
A compound of claim 1, said compound being N-methyl-N''-(2-(2-pyridylmethylthio)ethyl)thiourea.
Claim 8
Dependent Claim
9 words
A compound of claim 1, said compound being N-methyl-N''-(2-((3-methyl-2-pyridyl)methylthio)ethyl)thiourea.
Claim 9
Dependent Claim
9 words
A compound of claim 1, said compound being N-methyl-N''-(2-((6-methyl-2-pyridyl)methylthio)ethyl)thiourea.
Claim 10
Dependent Claim
9 words
A compound of claim 1, said compound being N-methyl-N''-(2-(3-pyridylmethylthio)ethyl)thiourea.
Claim 11
Dependent Claim
9 words
A compound of claim 1, said compound being N-methyl-N''-(2-(4-pyridylmethylthio)ethyl)thiourea.
Claim 12
Dependent Claim
9 words
A compound of claim 1, said compound being N-methyl-N''-(2-(2-pyridylmethylthio)ethyl)urea.
Claim 13
Dependent Claim
9 words
A compound of claim 1, said compound being N-methyl-N''-(2-((3-amino-2-pyridyl)methylthio)ethyl)-thiourea.
Claim 14
Dependent Claim
9 words
A compound of claim 1, said compound being N-methyl-N''-(2-((5-hydroxy-2-pyridyl)methylthio)ethyl)thiourea.
References Cited (Backward Citations)
US3736331A
Cited
US3759944A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |