US4042583A
Expired / Lapsed
US
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Imidazo[2,1-b]thiazole and thiazolo[3,2-a]-benzimidazole quaternary salts as hypoglycemic agents and growth promotants
Assignee: Pfizer Inc
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Filing: 1976-06-09
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Granted: 1977-08-16
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Expires: 1996-06-09
Abstract
Abstract 7-Substituted imidazo[2,1-b]thiazolium and 9-substitutedthiazolo[3,2-a]benzimidazolium salts as blood-sugar lowering agents and growth promotants.
Inventors
- 👤 Richard M. Acheson
- 👤 John K. Stubbs
- 👤 Charles A. R. Baxter
- 👤 Donald E. Kuhla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:26
CPC Classifications
A; A23; A23K; A23K20/00; A23K20/10; A23K20/116
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
109 words
A compound of the formula ##STR22## wherein X is a pharmaceutically acceptable anion; R 1 is styryl; R 2 is selected from the group consisting of hydrogen and alkyl having from 1 to 3 carbon atoms; R 3 is selected from the group consisting of hydrogen, alkyl having from 1 to 3 carbon atoms, adamantyl, phenyl and substituted phenyl wherein said substitutent is selected from the group consisting of dimethyl and dimethoxy; R 2 and R 3 when taken together are tetramethylene; R 4 is selected from the group consisting of hydrogen, alkyl having from 1 to 3 carbon atoms, phenyl, dimethylphenyl, and chlorophenyl and R 5 is hydrogen.
Claim 2
Dependent Claim
109 words
A compound of the formula ##STR22## wherein X is a pharmaceutically acceptable anion; R 1 is styryl; R 2 is selected from the group consisting of hydrogen and alkyl having from 1 to 3 carbon atoms; R 3 is selected from the group consisting of hydrogen, alkyl having from 1 to 3 carbon atoms, adamantyl, phenyl and substituted phenyl wherein said substitutent is selected from the group consisting of dimethyl and dimethoxy; R 2 and R 3 when taken together are tetramethylene; R 4 is selected from the group consisting of hydrogen, alkyl having from 1 to 3 carbon atoms, phenyl, dimethylphenyl, and chlorophenyl and R 5 is hydrogen.
Claim 3
Dependent Claim
7 words
The compound of claim 1, 3-methyl-7-styryl-5,6-dihydroimidazo[2,1-b]thiazolium chloride.
References Cited (Backward Citations)
US3364112A
Cited
US3860718A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-15 | 1981-02-14 | 1981-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-15 | 1985-02-14 | 1985-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-15 | 1989-02-14 | 1989-08-16 | $7700.00 | Window Closed / Lapsed |