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US4223146A
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4,5,6,7-Tetrahydroimidazo-[4,5-c]-pyridine derivatives
Assignee: Pfizer Italia SRL
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Filing: 1978-11-13
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Granted: 1980-09-16
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Expires: 1998-11-13
Abstract
Abstract Compounds are disclosed of the general formula (I): <IMAGE> (I) wherein R1 is a lower alkyl having from 1 to 4 carbon atoms; R2 is hydrogen or a lower alkyl having from 1 to 4 carbon atoms; and R3 is a saturated or unsaturated straight or branched alkyl having from 1 to 4 carbon atoms. A process for making such compounds is also disclosed. These compounds are useful as antiulcer agents and as inhibitors of gastric secretion.
Inventors
- 👤 Giuliana Arcari
- 👤 Luigi Bernardi
- 👤 Giovanni Falconi
- 👤 Ugo Scarponi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:34
CPC Classifications
C; C07; C07D; C07D471/00; C07D471/02; C07D471/04; A; A61; A61P; A61P1/00; A61P1/04; A61P25/00; A61P25/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
27 words
A compound of the formula (I): ##STR10## wherein R 1 is methyl or ethyl; R 2 is hydrogen or ethyl; and R 3 is methyl or isopropyl.
Claim 2
Dependent Claim
27 words
A compound of the formula (I): ##STR10## wherein R 1 is methyl or ethyl; R 2 is hydrogen or ethyl; and R 3 is methyl or isopropyl.
Claim 3
Dependent Claim
10 words
A compound as defined in claim 1, which is 1,4-Diethyl-5-(N-isopropylthiocarbamoyl)-4,5,6,7-tetrahydroimidazo-[4,5-c]-pyridine.
Claim 4
Dependent Claim
10 words
A compound as defined in claim 1, which is 1-Methyl-4-ethyl-5-(N-isopropylthiocarbamoyl)-4,5,6,7-tetrahydroimidazo-[4,5-c]-pyridine.
Claim 5
Dependent Claim
10 words
A compound as defined in claim 1, which is 1-Methyl-5-(N-isopropylthiocarbamoyl)-4,5,6,7-tetrahydroimidazo-[4,5,-c]-pyridine.
Claim 6
Dependent Claim
10 words
A compound as defined in claim 1, which is 1-Methyl-5-(N-methylthiocarbamoyl)-4,5,6,7-tetrahydroimidazo-[4,5-c]-pyridine.
References Cited (Backward Citations)
US4141899A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-16 | 1984-03-17 | 1984-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-16 | 1988-03-17 | 1988-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-16 | 1992-03-17 | 1992-09-16 | $7700.00 | Window Closed / Lapsed |