US3671526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thiazolopyrimidines
Assignee: Sandoz AG
•
Filing: 1970-05-25
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Granted: 1972-06-20
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Expires: 1990-05-25
Abstract
Abstract Substituted thiazolopyrimidines, e.g., 3-p-chlorophenyl-6,7dihydro-5H-thiazolo(3,2-a)pyrimidine hydrochloride, are prepared from phenacyl halides and propylene thiourea and are useful as CNS stimulants and analgesics.
Inventors
- 👤 Robert E Manning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:46
CPC Classifications
C; C07; C07D; C07D513/00; C07D513/02; C07D513/04
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
8 words
The compound of claim 1 which is 3-p-chlorophenyl-6,7-dihydro-5H-thiazolo(3,2-a)pyrimidine.
Claim 2
Dependent Claim
8 words
The compound of claim 1 which is 3-phenyl-6,7-dihydro-5H-thiazolo(3,2-a)pyrimidine.
Claim 3
Dependent Claim
8 words
The compound of claim 1 which is 2,3-diphenyl-6,7-dihydro-5H-thiazolo(3,2-a)pyrimidine.
Claim 4
Dependent Claim
8 words
The compound of claim 1 which is 3-(3,4-dichlorophenyl)-6,7-dihydro-5H-thiazolo(3,2-a)pyrimidine.
Claim 5
Dependent Claim
8 words
The compound of claim 1 which is 3-p-methoxyphenyl-6,7-dihydro-5H-thiazolo(3,2-a)pyrimidine.
Claim 6
Dependent Claim
8 words
The compound of claim 1 which is 3-p-fluorophenyl-6,7-dihydro-5H-thiazolo(3,2-a)pyrimidine.
Claim 7
Dependent Claim
8 words
The compound of claim 1 which is 3-p-biphenylyl-6,7-dihydro-5H-thiazolo(3,2-a)pyrimidine.
Claim 8
Dependent Claim
14 words
The compound of claim 1 which is 3- Alpha , Alpha , Alpha -trifluoro-m-tolyl-6,7-dihydro-5H-thiazolo(3,2-a)pyrimidine.
Claim 9
Dependent Claim
5 words
A compound of the formula
Claim 10
Dependent Claim
8 words
The compound of claim 10 which is 3-p-chlorophenyl-3-hydroxy-2,3,6,7-tetrahydro-5H-thiazolo(3,2-a)pyrimidine.
Claim 11
Dependent Claim
9 words
The compound of claim 10 which is 3-phenyl-3-hydroxy-2,3,6, 7-tetrahydro-5H-thiazolo(3,2-a)pyrimidine.
Claim 12
Dependent Claim
9 words
The compound of claim 10 which is 2,3-diphenyl-3-hydroxy-2, 3,6,7-tetrahydro-5H-thiazolo(3,2-a)pyrimidine.
Claim 13
Dependent Claim
9 words
The compound of claim 10 which is 3-(3,4-dichlorophenyl)-3-hydroxy-2,3,6,7-tetrahydro-5H-thiazolo(3,2 -a)pyrimidine.
Claim 14
Dependent Claim
8 words
The compound of claim 10 which is 3-hydroxy-3-p-methoxyphenyl-2,3,6,7-tetrahydro-5H-thiazolo(3,2-a)pyrimidine.
Claim 15
Dependent Claim
8 words
The compound of claim 10 which is 3-p-fluorophenyl-3-hydroxy-2,3,6,7-tetrahydro-5H-thiazolo(3,2-a)pyrimidine.
Claim 16
Dependent Claim
8 words
The compound of claim 10 which is 3-p-biphenylyl-3-hydroxy-2,3,6,7-tetrahydro-5H-thiazolo(3,2-a)pyrimidine.
Claim 17
Dependent Claim
14 words
The compound of claim 10 which is 3-hydroxy-3- Alpha , Alpha , Alpha -trifluoro-m-tolyl-2,3,6,7-tetrahydro-5H-thiazolo(3,2-a)pyrimidine.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |