Patent US5098904A successfully refreshed from Google Patents.
US5098904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cerebral function enhancing pyrimidinyl derivatives
Assignee: Bristol Myers Squibb Co
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Filing: 1990-06-27
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Granted: 1992-03-24
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Expires: 2010-06-27
Abstract
Abstract A series of pyprimidinyl compounds of formulae I, II and III; ##STR1## wherein R 1 and R 2 are independently selected from hydrogen and hydroxy; R 3 is selected from hydrogen, hydroxy, or oxo, with the proviso that R 3 can only be oxo when R 1 and R 2 are hydrogen, and further that R 1 , R 2 , and R 3 cannot all be hydrogen or hydroxy at the same time; and the solid and dotted lines refer to either a double covalent bond or a single covalent bond with another hydrogen atom covalently bonded to the carbon terminus end. The compounds of this invention possess cognition and memory enhancing activity.
Inventors
- 👤 Ronald J. Mattson
- 👤 Robert Mayol
- 👤 Michael E. Brady
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:57
CPC Classifications
C; C07; C07D; C07D401/00; C07D401/14; A; A61; A61P; A61P25/00; A61P25/28
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
51 words
The compound of formula I ##STR34## and its pharmaceutically acceptable salts thereof, wherein R 1 , R 2 and R 3 are independently selected from hydrogen and hydroxy with the proviso that R 1 , R 2 , and R 3 cannot all be hydrogen or hydroxy at the same time.
Claim 2
Dependent Claim
51 words
The compound of formula I ##STR34## and its pharmaceutically acceptable salts thereof, wherein R 1 , R 2 and R 3 are independently selected from hydrogen and hydroxy with the proviso that R 1 , R 2 , and R 3 cannot all be hydrogen or hydroxy at the same time.
Claim 3
Dependent Claim
12 words
A compound of Formula II and its pharmaceutically acceptable salts thereof ##STR35##
Claim 4
Dependent Claim
12 words
A compound of Formula II and its pharmaceutically acceptable salts thereof ##STR35##
Claim 5
Dependent Claim
12 words
A compound of Formula III and its pharmaceutically acceptable salts thereof ##STR36##
Claim 6
Dependent Claim
12 words
A compound of Formula III and its pharmaceutically acceptable salts thereof ##STR36##
Claim 7
Dependent Claim
6 words
The compound of claim 1, 3-hydroxy-1-[[1-[2-(trifluoromethyl)-4-pyrimidinyl]-4-piperidinyl]methyl]-2-pyrrolidinone.
Claim 8
Dependent Claim
6 words
The compound of claim 1, 4-hydroxy-1-[[1-[2-(trifluoromethyl)-4-pyrimidinyl]-4-piperidinyl]methyl]-2-pyrrolidinone.
Claim 9
Dependent Claim
6 words
The compound of claim 1, 5-hydroxy-1-[[1-[2-(trifluoromethyl)-4-pyrimidinyl]-4-piperidinyl]methyl]-2-pyrrolidinone.
Claim 10
Dependent Claim
6 words
The compound of claim 1, 3,4-dihydroxy-1-[[1-[2-(trifluoromethyl)-4-pyrimidinyl]-4-piperidinyl]methyl]-2-pyrrolidinone.
Claim 11
Dependent Claim
6 words
The compound of claim 1, 3,5-dihydroxy-1-[[1-[2-(trifluoromethyl)-4-pyrimidinyl]-4-piperidinyl]methyl]-2-pyrrolidinone.
Claim 12
Dependent Claim
6 words
The compound of claim 1, 4,5-dihydroxy-1-[[1-[2-(trifluoromethyl)-4-pyrimidinyl]-4-piperidinyl]methyl]-2-pyrrolidinone.
Claim 13
Dependent Claim
33 words
A method for enhancing cognition and memory in a mammal in need of such treatment which comprises systemic administration to the mammal of an effective dose of a compound claimed in claim 1.
Claim 14
Dependent Claim
32 words
A pharmaceutical composition in dosage unit form suitable for systemic administration to a mammalian host comprising a pharmaceutical carrier and cognition and memory enhancing amount of a compound claimed in claim 1.
Claim 15
Dependent Claim
33 words
A method for enhancing cognition and memory in a mammal in need of such treatment which comprises systemic administration to the mammal of an effective dose of the compound claimed in claim 2.
Claim 16
Dependent Claim
32 words
A pharmaceutical composition in dosage unit form suitable for systemic administration to a mammalian host comprising a pharmaceutical carrier and cognition and memory enhancing amount of the compound claimed in claim 2.
Claim 17
Dependent Claim
33 words
A method for enhancing cognition and memory in a mammal in need of such treatment which comprises systemic administration to the mammal of an effective dose of the compound claimed in claim 3.
Claim 18
Dependent Claim
32 words
A pharmaceutical composition in dosage unit form suitable for systemic administration to a mammalian host comprising a pharmaceutical carrier and cognition and memory enhancing amount of the compound claimed in claim 3.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-03-24 | 1995-09-23 | 1996-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-24 | 1999-09-23 | 2000-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-24 | 2003-09-23 | 2004-03-24 | $7700.00 | Window Closed / Lapsed |