Abstract: A drug having a high affinity for benzodiazepine ?3 receptors and showing curative and preventive effects for anxiety and depression, which comprises as the active ingredient, for example, a compound of the formula (1): wherein R1 and R2 are independently a hydrogen atom, an optionally substituted alkyl group, an optionally substituted aryl group, etc., R3 and R4 are independently a hydrogen atom, an optionally substituted alkyl group, etc., R5, R6, R7 and R8 are independently a hydrogen atom, an optionally substituted alkyl group, an optionally substituted aryl group, etc., X is an oxygen atom, a sulfur atom, NR10, etc. (in which R10 is a hydrogen atom, an optionally substituted alkyl group, etc.

Abstract: There is provided a selective serotonin reuptake inhibitor having affinity for serotonin 1A receptors which comprises a cyclic amine represented by the formula: wherein G represents a formula (2): a prodrug of said cyclic amine, or a pharmaceutically acceptable salt of said cyclic amine or prodrug, as an active ingredient.

Abstract: A serotonin reuptake inhibitor containing a cyclic amine represented by the following formula, a prodrug thereof, or a pharmaceutically acceptable salt of said cyclic amine or prodrug as an active ingredient: wherein R0 is a hydrogen atom, a halogen atom, an alkyl group, a substituted alkyl group, a hydroxyl group, an alkoxy group or the like, R3 is a hydrogen atom or the like, Y is an alkylene group or the like, Z is a hydrogen atom, a cycloalkyl group, an aryl group or the like, n is 1, 2 or 3, and m is 2, 3, 4, 5 or 6.

Abstract: A serotonin reuptake inhibitor containing a cyclic amine represented by the following formula, a prodrug thereof, or a pharmaceutically acceptable salt of said cyclic amine or prodrug as an active ingredient: 1

Abstract: A tricyclic quinoxalinedione derivative represented by the formula 1: ##STR1## wherein X represents hydrogen, alkyl, halogen, cyano, trifluoromethyl, or nitro;R.sup.1 represents hydrogen, alkyl, cycloalkyl, or cycloalkylalkyl;G represents --CONR.sup.2 -- or --NR.sup.2 CO--, wherein R.sup.2 represents hydrogen or alkyl;J represents an acidic group or a group which is convertible thereto in vivo;E represents an basic group or a group which is convertible thereto in vivo;Y represents a single bond, alkylene, alkenylene, substituted alkylene, or Y.sup.1 --Q--Y.sup.2, wherein Y.sup.1 represents a single bond or alkylene, Y.sup.2 represents alkylene, and Q represents a heteroatom selected from oxygen or sulfur;Z represents alkylene,or a pharmaceutically acceptable salt thereof, these compounds are selective antagonists of glycine binding site of the NMDA receptor.

Abstract: Tricyclic quinoxalinediones of the formula: ##STR1## wherein X is alkyl, halogen, cyano, trifluoromethyl, nitro, hydroxy, amino, etc.; R.sup.1 is H, etc.; R.sup.2 is H, alkyl, cycloalkyl, alkenyl, alkynyl, cycloalkylalkyl, arylalkyl, substituted arylalkyl, aryl, or substituted aryl; W is H, CO.sub.2 R.sup.3, CO.sub.2 Y, CONR.sup.3 R.sup.4, CONR.sup.3 Y, CON(OR.sup.3)R.sup.4, COR.sup.3, CN, tetrazolyl, or substituted alkyl; R.sup.3 and R.sup.4 independently are H, alkyl, cycloalkyl, alkenyl, alkynyl, etc.