Abstract: The present invention is directed to a method for producing a cyclic diamine compound (3) or a salt thereof through the following scheme: (wherein Ar represents a phenyl group, a pyridyl group, or a pyrimidinyl group, any of which may have a substituent; X represents NH, S, or O; ring A represents a benzene ring or a pyridine ring, which may have a substituent; 1 represents an integer of 1 or 2; m represents an integer of 1 or 2; and n represents an integer of 1 to 6). The method enables synthesis of a cyclic diamine compound (3) or a salt thereof, which serves as an ACAT inhibitor, in an industrially useful manner.

Abstract: The present invention provides to a novel compound having an ACAT inhibiting activity.

Abstract: A process for obtaining a compound (1) and an intermediate thereof in high yield and high optical yield is provided. A process for producing a compound (4), the process including reacting a compound (2) with a compound (3) in the presence of a base; and a process for producing a compound (1), the process including reacting a compound (2) with a compound (3) in the presence of a base to yield a compound (4) and then deesterifying the compound (4). wherein R represents an alkyl group having 1 to 6 carbon atoms or an aralkyl group having 7 to 8 carbon atoms.

Abstract: The present invention provides to a novel compound having an ACAT inhibiting activity.

Abstract: The present invention provides an industrially useful method for synthesizing a cyclic diamine derivative (4) or a salt thereof which serves as an ACAT inhibitor. A 2-hydroxyacetylaminopyridine compound represented by formula (1), and a method for producing a cyclic diamine derivative represented by formula (4) or a salt thereof from compound (1) through 1) Step A-1, 2) Steps B-1 and B-2, or 3) Steps B-1, B-3, and B-4.

Abstract: The present invention is directed to a 2,4-bis(trifluoroethoxy)pyridine compound represented by formula (1): (wherein X1 represents a fluorine atom or a hydrogen atom) or a salt thereof, and to a drug containing the compound or the salt as an active ingredient. The compound has metabolic resistance in human liver microsome, good absorbability upon oral administration, and excellent ACAT inhibitory activity.

Abstract: This invention relates to a method for producing 1-[2-(benzimidazol-2-ylthio)ethyl]piperazine (5) or its salt by the following reaction scheme: This invention enables efficient production of 1-[2-(benzimidazol-2-ylthio) ethyl]piperazine or its salt which is an intermediate in the production of a cyclic diamine compound which is useful as a ACAT inhibitor.

Abstract: The present invention is directed to a process for producing a compound (5) from the compound (1). By use of the compound (1), a variety of cyclic diamine derivatives (5) or salts thereof, useful as drugs, can be produced in an industrially advantageous manner with a constant yield.

Abstract: The present invention is directed to a compound represented by the following formula (1) and to a process for producing a compound (5) from the compound (1). By use of the compound (1) of the present invention, a variety of cyclic diamine derivatives (5) or salts thereof, useful as drugs, can be produced in an industrially advantageous manner with a constant yield.

Abstract: The present invention relates to 2-[4-[2-(7-trifluoromethylbenzoxazol-2-ylthio)ethyl]piperazin-1-yl]-N-[4-hydroxy-2,6-bis(trifluoromethyl)phenyl]acetamide or salt thereof, and an intermediate for the preparation thereof. The above-described compound has both an inhibitory action on ACAT in the artery wall and remarkably high metabolic resistance in human liver microsomes, and exhibits excellent effects for suppressing lipids depression in aorta in vivo so that it is useful as a highly effective preventive or remedy for hyperlipidemia and arteriosclerosis with less side effects.

Abstract: A method of stabilizing lipid-rich plaques and method of preventing the rupture thereof, characterized in that an effective amount of 2-[4-[2-(benzimidazol-2-ylthio)ethyl]piperazin-1-yl]-N-[2,4 -bis(methylthio)-6-methyl-3-pyridyl]acetamide, its acid adduct salt or a hydrate thereof is administered to patients with lipid-rich plaques. Prevention of plaque rupture and stabilization of plaques can be attained by reducing the occupancy of macrophages in lipid-rich plaques being unstable and tending to rupture among plaques being a lesion from a seat of atherosclerosis and simultaneously increasing the occupancy of collagen therein.

Abstract: The present invention is directed to a method for producing a cyclic diamine compound (3) or a salt thereof through the following scheme: (wherein Ar represents a phenyl group, a pyridyl group, or a pyrimidinyl group, any of which may have a substituent; X represents NH, S, or O; ring A represents a benzene ring or a pyridine ring, which may have a substituent; 1 represents an integer of 1 or 2; m represents an integer of 1 or 2; and n represents an integer of 1 to 6). The method enables synthesis of a cyclic diamine compound (3) or a salt thereof, which serves as an ACAT inhibitor, in an industrially useful manner.

Abstract: This invention relates to a method for preparing an acid addition salt of a polyacidic basic compound, or a water adduct having basic site(s) stronger than pyridine. The method comprises reacting the polyacidic basic compound with an acid salt of pyridine. By the present invention, the number of moles of an added acid in the acid addition salt of the polyacidic basic compound can be readily changed to a number suited for the polyacidic basic compound as needed.

Abstract: This invention relates to a method for producing 1-[2-(benzimidazol-2-ylthio)ethyl]piperadine (5) or its salt by the following reaction scheme: This invention enables efficient production of 1-[2-(benzimidazol-2-ylthio) ethyl]piperadine or its salt which is an intermediate in the production of a cyclic diamine compound which is useful as a ACAT inhibitor.

Abstract: The present invention is directed to a process for producing cyclic diamine compounds (4) or salts or intermediates thereof according to the following reaction scheme: (wherein R is a protective group and Ar is an optionally substituted aryl group). According to the present invention, the cyclic diamine compounds (4) useful as drugs or salts or intermediates thereof can be produced at high levels of yield and purity in terms of industrially advantageous productivity.

Abstract: The present invention offers novel cyclic diamine compounds and a pharmaceutical composition containing the same. The present invention relates to a compound represented by the formula (I) or salt(s) or solvate(s) thereof. (In the formula, is an optionally substituted divalent residue of benzene, pyridine, cyclohexane or naphthalene or is a vinylene group where Ar is an optionally substituted aryl group; X is —NH—, oxygen atom or sulfur atom; Y is —NR1—, oxygen atom, sulfur atom, sulfoxide or sulfone; Z is a single bond or —NR2—; R1 is hydrogen atom, optionally substituted lower alkyl group, optionally substituted aryl group or optionally substituted silyl lower alkyl group; R2 is hydrogen atom, optionally substituted lower alkyl group, optionally substituted aryl group or optionally substituted silyl lower alkyl group; l is an integer of from 0 to 15; m is an integer of 2 or 3; and n is an integer of from 0 to 3).

Abstract: The present invention relates to 2-[4-[2-(7-trifluoromethylbenzoxazol-2-ylthio)ethyl]piperazin-1-yl]-N-[4-hydroxy-2,6-bis(trifluoromethyl)phenyl]acetamide or salt thereof, and an intermediate for the preparation thereof. The above-described compound has both an inhibitory action on ACAT in the artery wall and remarkably high metabolic resistance in human liver microsomes, and exhibits excellent effects for suppressing lipids depression in aorta in vivo so that it is useful as a highly effective preventive or remedy for hyperlipidemia and arteriosclerosis with less side effects.

Abstract: The present invention provides to a novel compound having an ACAT inhibiting activity.

Abstract: The present invention provides to a novel compound having an ACAT inhibiting activity.

Abstract: The present invention is directed to a process for producing cyclic diamine compounds (4) or salts or intermediates thereof according to the following reaction scheme: (wherein R is a protective group and Ar is an optionally substituted aryl group). According to the present invention, the cyclic diamine compounds (4) useful as drugs or salts or intermediates thereof can be produced at high levels of yield and purity in terms of industrially advantageous productivity.