Claims
- 1. A compound of Formula XXI
- and the pharmaceutically acceptable acid addition salts thereof wherein
- R.sup.2 is hydrogen, lower(meaning from 1 to 4 atoms) alkyl, pyridinyl, 1-methylpyrrolyl, or phenyl, optimally substituted at one or two ring positions with lower alkyl, halogen, hydrogen, trifluoromethyl, cyano, nitro, formyl, carbonyl-lower-alkyl, lower-alkylamino, di-lower-alkylamino, carbonyl-lower-alkyloxy, carbonylphenoxy, carbonylphenyl-lower-alkyloxy, lower-alkyloxy, phenoxy, or phenyl-loweralkyloxy;
- R.sup.7 is hydrogen;
- R.sup.8 is hydrogen or lower alkyl; and
- R.sup.9 is lower alkyl; or
- R.sup.8 and R.sup.9 are combined to give:
- substructure (a) ##STR37## wherein R.sup.1 is hydrogen or lower alkyl, substructure (b); ##STR38## substructure (c); and ##STR39## R.sup.7 and R.sup.9 are combined as substructure (d) ##STR40## when R.sup.8 is hydrogen; and X is a chemical bond, ##STR41##
- 2. A compound of claim 1 wherein R.sup.8 and R.sup.9 are combined to give substructure (a) ##STR42##
- 3. The compound of claim 1 wherein R.sup.2 is hydrogen.
- 4. The compound of claim 1 wherein X is a chemical bond.
- 5. The compound of claim 1 wherein R.sup.8 and R.sup.9 are combined to give substructure (b) ##STR43##
- 6. The compound of claim 1 wherein R.sup.2 is pyridinyl.
- 7. The compound of claim 1, 1-[[4-2-pyrimidinyl)-1-piperazinyl]methyl]-2-pyrrolidinone.
- 8. The compound of claim 1, 5-methyl-1-[[4-(2-pyrimidinyl)-1-piperazinyl]methyl]-2-pyrrolidinone.
- 9. The compound of claim 1, 1-[(2-chlorophenyl)-[4-(2-pyrimidinyl)-1-piperazinyl]methyl]-2-pyrrolidinone.
- 10. The compound of claim 1, 1-[(3-chlorophenyl)-[4-(2-pyrimidinyl)-1-piperazinyl]methyl]-2-pyrrolidinone.
- 11. The compound of claim 1, 1-[(4-methoxyphenyl)[4-(2-pyrimidinyl)-1-piperazinyl]methyl]-2-pyrrolidinone.
- 12. The compound of claim 1, 1-[(4-cyanophenyl)-[4-(2-pyrimidinyl)-1-piperazinyl]methyl]-2-pyrrolidinone.
- 13. The compound of claim 1, 1-[2-[4-(2-pyrimidinyl)-1-piperazinyl]ethyl]-2-pyrrolidinone.
- 14. The compound of claim 1, 1-[(2-oxo-1-pyrrolidinyl)acetyl]-4-(2-pyrimidinylpiperazine-[2-propanolate].
- 15. The compound of claim 1, 2-oxo-N-[2-[4-(2-pyrimidinyl)-1-piperazinyl]ethyl]-1-pyrrolidineacetamide.
- 16. The compound of claim 1, 1-[(4-pyridinyl)-[4-(2-pyrimidinyl)-1-piperazinyl]methyl]-2-pyrrolidinone.
- 17. The compound of claim 1, 1-[(1-methyl-1H-pyrrol-2-yl([4-(2-pyrimidinyl)-1-piperazinyl]methyl]-2-pyrrolidinone.
- 18. The compound of claim 1, 2-[[4-(2-pyrimidinyl)-1-piperazinyl]methyl]-1H-isoindole-1,3-(2H)-dione.
- 19. The compound of claim 1, 2,3-dihydro-2-[[4-(2-pyrimidinyl)-1-piperazinyl]methyl]-1H-isoindol-1-one.
- 20. The compound of claim 1, N-methyl-N-[[4-(2-pyrimidinyl)-1-piperazinyl]methyl]acetamide.
- 21. The compound of claim 1, 2,3-dihydro-3-[4-(2-pyrimidinyl)-1-piperazinyl]-1H-isoindol-1-one.
- 22. The method for enhancing cognition 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.
- 23. The method for enhancing 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.
- 24. A pharmaceutical composition in dosage unit form suitable for systemic administration to a mammalian host comprising a pharmaceutical carrier and from about 0.5 to 1 g of a compound claimed in claim 1.
CROSS-REFERENCE TO RELATED APPLICATION
This is a continuation-in-part application of Ser. No. 633,371 filed July 23, 1984 and now abandoned.
US Referenced Citations (8)
Foreign Referenced Citations (2)
Number |
Date |
Country |
0089900 |
Sep 1983 |
EPX |
2023594 |
Jan 1980 |
GBX |
Non-Patent Literature Citations (1)
Entry |
Malawska, et al., "Synthesis and Pharmacological Properties of Some 2-Pyrrolidinone Mannich Bases", Polish Journal of Pharmacology, 1982, 34, 373-382. |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
633371 |
Jul 1984 |
|