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US4008245A
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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: 1975-07-08
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Granted: 1977-02-15
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Expires: 1995-07-08
Abstract
Abstract 7-Substituted imidazo[2,1-b]thiazolium and 9-substituted thiazolo-[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
2026-11-09 02:40
CPC Classifications
A; A23; A23K; A23K20/00; A23K20/10; A23K20/116
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
124 words
A compound of the formula ##STR25## wherein X is a pharmaceutically acceptable anion; R 1 is selected from the group consisting of alkyl having from twelve to eighteen carbon atoms and allyl; R 2 is selected from the group consisting of hydrogen and alkyl having from one to three carbon atoms; R 3 is selected from the group consisting of hydrogen, alkyl having from one to three carbon atoms, adamantyl, phenyl and substituted phenyl wherein said substituent 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 one to three carbon atoms, phenyl, dimethylphenyl, and chlorophenyl and R 5 is hydrogen.
Claim 2
Dependent Claim
124 words
A compound of the formula ##STR25## wherein X is a pharmaceutically acceptable anion; R 1 is selected from the group consisting of alkyl having from twelve to eighteen carbon atoms and allyl; R 2 is selected from the group consisting of hydrogen and alkyl having from one to three carbon atoms; R 3 is selected from the group consisting of hydrogen, alkyl having from one to three carbon atoms, adamantyl, phenyl and substituted phenyl wherein said substituent 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 one to three carbon atoms, phenyl, dimethylphenyl, and chlorophenyl and R 5 is hydrogen.
Claim 3
Dependent Claim
43 words
A compound of claim 1 wherein X is bromo, R 1 is alkyl having from twelve to eighteen carbon atoms, R 2 , R 4 and R 5 are each hydrogen and R 3 is alkyl having from one to three carbon atoms.
Claim 4
Dependent Claim
7 words
The compound of claim 2, 7-cetyl-3-methyl-5,6-dihydroimidazo[2,1-b]thiazolium bromide.
References Cited (Backward Citations)
DE1445669A1
Cited
US3932395A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-15 | 1980-08-16 | 1981-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-15 | 1984-08-16 | 1985-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-15 | 1988-08-16 | 1989-02-15 | $7700.00 | Window Closed / Lapsed |