Claims
- 1. A prolinal derivative of the formula: ##STR37## wherein A represents alkylene group of from 1 to 4 carbon atom(s) or saturated hydrocarbon ring of from 3 to 7 carbon atoms, n represents a number 2, 3 or 4, D represents heterocyclic ring selected from the group consisting of furan, thiophene, pyran, benzofuran, benzothiophene, chromene and xanthene ring, wherein said heterocyclic ring represented by D is unsubstituted or substituted by from one to three of halogen atom, alkyl group of from 1 to 4 carbon atoms, alkoxy group of from 1 to 4 carbon atom(s), nitro group or trifluoromethyl group.
- 2. A compound according to claim 1, which is a compound of the formula: ##STR38## represents saturated hydrocarbon ring of from 3 to 7 carbon atoms and the other symbols have the same meaning as defined in claim 1.
- 3. A compound according to claim 1, which is a compound of the formula: ##STR39## wherein AlK represents alkylene group of from 1 to 4 carbon atom(s), the other symbols are the same meaning as defined in claim 1.
- 4. A pharmaceutical composition for treating amnesia which comprises, as an active ingredient, an effective amount of prolinal derivative of the formula (I) depicted in claim 1 and pharmaceutical acceptable carrier and/or coating.
- 5. The method for treatment of amnesia which comprises administering a therapeutically effective amount of prolinal derivative of the formula (I) depicted in claim 1.
Priority Claims (1)
Number |
Date |
Country |
Kind |
62-22407 |
Feb 1987 |
JPX |
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Parent Case Info
This is a divisional of application Ser. No. 07/151,862 filed Feb. 3, 1989, now U.S. Pat. No. 4,977,180.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
4701465 |
Tanaka et al. |
Oct 1987 |
|
4743616 |
Tanaka et al. |
May 1988 |
|
Foreign Referenced Citations (1)
Number |
Date |
Country |
0154353 |
Aug 1985 |
EPX |
Divisions (1)
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Number |
Date |
Country |
Parent |
151862 |
Feb 1988 |
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