Abstract: A method for suppressing the number of peripheral blood lymphocytes involving administering to a human in need thereof a pharmaceutically effective amount of a compound which is (2R) -2-amino-2-methyl-4-{1-methyl-5-[4-(4-methylphenyl)butanoyl]pyrrol-2-yl}butan-1-ol or a pharmacologically acceptable salt thereof, such as the hydrochloride salt.

Abstract: The present invention provides a compound having the following general formula (I) which is useful as a neurokinin receptor antagonist: (wherein, R1, R2: optionally substituted (hetero)aryl, R3: —CO—R4, —CO—O—R4, etc., R4: alkyl, cycloalkyl, etc., A: CH2, CO, SO2, B: a single bond, etc., D: oxygen, CH2, E: alkylene, alkenylene, n: 1 to 3).

Abstract: The present invention provides a compound having the following general formula (I) which is useful as a neurokinin receptor antagonist: (wherein, R1, R2: optionally substituted (hetero)aryl, R3: —CO—R4, —CO—O—R4, etc., R4: alkyl, cycloalkyl, etc., A: CH2, CO, SO2, B: a single bond, etc., D: oxygen, CH2, E: alkylene, alkenylene, n: 1 to 3).

Abstract: A pharmaceutical composition is provided that has a low toxicity, demonstrates superior physicochemical properties and pharmacokinetics, and has superior peripheral blood lymphocyte count lowering activity. The pharmaceutical composition contains a compound having general formula (I): [Chemical Formula 1] (wherein R1 represents a methyl group or an ethyl group, R2 represents a methyl group or an ethyl group, and R3 represents a phenyl group substituted with 1 to 3 substituents selected from the group consisting of a halogen atom, a lower alkyl group, a cycloalkyl group, a lower alkoxy group, a halogeno lower alkyl group, a lower aliphatic acyl group and a cyano group), a pharmacologically acceptable salt thereof or a pharmacologically acceptable ester thereof.

Abstract: Compounds of formula (I) which exhibit excellent immune suppression activity, pharmacologically acceptable salts thereof, esters thereof or other derivatives: wherein R1 and R2 are a hydrogen atom, an amino protecting group; R3 is a hydrogen atom, a hydroxy protecting group; R4 is a lower alkyl group; n is an integer from 1 to 6; X is an ethylene group; Y is a C1-C10 alkylene group, a C1-C10 alkylene group substituted with 1 to 3 substituents selected from substituent group a and b; R5 is an aryl group; R6 and R7 are a hydrogen atom, a group selected from substituent group a; with the proviso when R5 is a hydrogen atom, Y is not a single bond or a straight chain C1-C10 alkylene group.

Abstract: Compounds of formula (I) which exhibit excellent immune suppression activity, pharmacologically acceptable salts thereof, esters thereof or other derivatives: 1

Abstract: Compounds of formula (I) which exhibit excellent immune suppression activity, pharmacologically acceptable salts thereof esters thereof or other derivatives: wherein R1 and R2 are a hydrogen atom, an amino protecting group; R3 is a hydrogen atom, a hydroxy protecting group; R4 is a lower alkyl group; n is an integer from 1 to 6; X is an ethylene group; Y is a C1-C10 alkylene group, a C1-C10 aklene group substituted with 1 to 3 substituents selected from substituent group a and b; R5 is an aryl group; R6 and R7 are a hydrogen atom, a group selected from substituent group a; with the proviso when R5 is a hydrogen atom, Y is not a single bond or a straight chain C1-C10 akylene group.

Abstract: Compounds of formula (I) which exhibit excellent immune suppression activity, pharmacologically acceptable salts thereof, esters thereof or other derivatives: 1

Abstract: A compound of the formula (I) wherein R1 and R2 is a substituted or unsubstituted aryl group, or a substituted or unsubstituted heteroaryl group. A is CH2, CO or SO2. B is a single bond, alkylene or alkenylene. D is O or S. E is alkylene or alkenylene. wherein G is a substituted or unsubstituted cycloalkene ring, or a substituted cycloalkane ring. Ar is a substituted or unsubstituted aryl ring, or a substituted or unsubstituted heteroaryl ring. R3 is alkyl. n is 1-3. The invention includes a pharmacologically acceptable salt, ester or other derivative of a compound of the formula (I). The invention also provides pharmaceutical compositions and methods of treating specified diseases utilizing a compound of formula (I).