Abstract: Compounds represented by the general formula [I]: wherein R1 and R2 are each hydrogen, halogen, an optionally substituted linear hydrocarbon group, or hydroxyl which may be substituted with an optionally substituted liner hydrocarbon group, or R1 and R2 together with the carbon atoms adjacent thereto may form an optionally substituted cyclic hydrocarbon or a dihydrofuran ring which may have an oxo group; ring A is a benzene ring which may be further substituted; ring B is an aromatic ring which may be substituted; X is a bond or a spacer whose main chain has 1 to 6 atoms; Y is carboxyl which may be esterified, carbamoyl which may be substituted, cyano, or an optionally substituted heterocyclic group bearing a hydrogen atom capable of being deprotonated, or salts thereof, which are useful as lipid-rich plaque regressing agents and/or ACAT inhibitors.

Abstract: The present invention provides a lipid-rich plaque regressing agent comprising a compound represented by Formula: in which ring A is a cyclic hydrocarbon or the like; ring B is a heterocyclic ring or the like; each of X and Y is —NR1— (in which R1 is a hydrocarbon or the like); D is a C1-3 alkylene group or the like; E is —NH— or the like; G is a bond or the like; and Ar is an aryl or the like; D may be taken together with a constituent atom of the ring B to form a ring, and R4 may be taken together with a constituent atom of the ring B to form a ring.

Abstract: The present invention provides a lipid-rich plaque regressing agent comprising a compound represented by Formula: in which ring A is a cyclic hydrocarbon or the like; ring B is a heterocyclic ring or the like; each of X and Y is —NR1— (in which R1 is a hydrocarbon or the like); D is a C1-3 alkylene group or the like; E is —NH— or the like; G is a bond or the like; and Ar is an aryl or the like; D may be taken together with a constituent atom of the ring B to form a ring, and R4 may be taken together with a constituent atom of the ring B to form a ring.

Abstract: Compounds represented by the general formula. [I]: wherein R1 and R2 are each hydrogen, halogen, an optionally substituted linear hydrocarbon group, or hydroxyl which may be substituted with an optionally substituted liner hydrocarbon group, or R1 and R2 together with the carbon atoms adjacent thereto may form an optionally substituted cyclic hydrocarbon or a dihydrofuran ring which may have an oxo group; ring A is a benzene ring which may be further substituted; ring B is an aromatic ring which may be substituted; X is a bond or a spacer whose main chain has 1 to 6 atoms; Y is carboxyl which may be esterified, carbamoyl which may be substituted, cyano, or an optionally substituted heterocyclic group bearing a hydrogen atom capable of being deprotonated, or salts thereof, which are useful as lipid-rich plaque regressing agents and/or ACAT inhibitors.

Abstract: The present invention provides a lipid-rich plaque regressing agent comprising a compound represented by Formula: 1

Abstract: It is intended to find an efficient method of searching for drugs affecting the cholesteryl ester cycle and establish a system of efficiently searching for defoaming agents or regression agents artherosclerotic lesion and a system of searching for therapeutic agents remedies for atherosclerosis with a mechanism different from publicly known ones.

Abstract: A composition comprises a 1,7-disubstituted-4-oxo-3 -quinolinecarboxylic acid or 1,7-disubstituted-4-oxo-3 -naphthyridinecarboxylic acid derivative which is useful as a prophylactic and/or therapeutic agent for peripheral arterial obstruction, acute myocardial infarction, an antitumor agent, and as a prophylactic and/or therapeutic agent for osteoporosis.

Abstract: A composition comprises a 1,7-disubstituted-4-oxo-3-quinolinecarboxylic acid or 1,7-disubstituted-4-oxo-3-naphthyridinecarboxylic acid derivative which is useful as a prophylactic and/or therapeutic agent for peripheral arterial obstruction, acute myocardial infarction, an antitumor agent, and as a prophylactic and/or therapeutic agent for osteoporosis.

Abstract: A composition comprises a 1,7-disubstituted-4-oxo-3-quinolinecarboxylic acid or 1,7-disubstituted-4-oxo-3-naphthyridinecarboxylic acid derivative which is useful as a prophylactic and/or therapeutic agent for peripheral arterial obstruction, acute myocardial infarction, an antitumor agent, and as a prophylactic and/or therapeutic agent for osteoporosis.