US4087423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pyrazolo[4,3-e][1,2,4]triazolo[4,3-c]pyridines
Assignee: ER Squibb and Sons LLC
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Filing: 1977-07-20
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Granted: 1978-05-02
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Expires: 1997-07-20
Abstract
Abstract New pyrazolo[4,3-e][1,2,4]triazolo[4,3-c]pyrimidines have the general formula ##STR1## They are useful as antiinflammatory agents.
Inventors
- 👤 Uwe D. Treuner
- 👤 Hermann Breuer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:53
CPC Classifications
C; C07; C07D; C07D231/00; C07D231/02; C07D231/10; C07D231/14; C07D231/38; A; A61; A61P; A61P29/00; C07D487/00; C07D487/02; C07D487/04; C07D487/12; C07D487/14
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
43 words
A compound of the formula ##STR32## wherein R 1 and R 2 each is hydrogen or lower alkyl; R 3 is ##STR33## and R 5 and R 6 together with the nitrogen form one of the heterocyclic radicals pyrrolidino, piperidino, morpholino or piperazino.
Claim 2
Dependent Claim
43 words
A compound of the formula ##STR32## wherein R 1 and R 2 each is hydrogen or lower alkyl; R 3 is ##STR33## and R 5 and R 6 together with the nitrogen form one of the heterocyclic radicals pyrrolidino, piperidino, morpholino or piperazino.
Claim 3
Dependent Claim
16 words
A compound as in claim 1 wherein R 1 is methyl and R 2 is hydrogen.
Claim 4
Dependent Claim
10 words
A compound as in claim 1 wherein ##STR34## is pyrrolidino.
Claim 5
Dependent Claim
10 words
A compound as in claim 1 wherein ##STR35## is piperidino.
Claim 6
Dependent Claim
10 words
A compound as in claim 1 wherein ##STR36## is morpholino.
Claim 7
Dependent Claim
10 words
A compound as in claim 1 wherein ##STR37## is piperazino.
Claim 8
Dependent Claim
11 words
A compound as in claim 2 wherein R 3 is 2-piperidinoethyl.
Claim 9
Dependent Claim
11 words
A compound as in claim 2 wherein R 3 is 3-piperidinopropyl.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-01 | 1981-10-31 | 1982-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-01 | 1985-10-31 | 1986-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-01 | 1989-10-31 | 1990-05-02 | $7700.00 | Window Closed / Lapsed |