BRANCHED CHAIN HIGHER FATTY ACID DIESTER DERIVATIVE HAVING DIETHYLENE TRIAMINE TYPE METAL CHELATE STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a compound which is excellent in solubility and the like and is suitable for a liposome contrast medium selective to lesions such as blood vessel diseases. SOLUTION: The present invention provides a compound represented by general formula (I) (wherein, R1, R2, R3and R4are each independently a 7-24C alkyl group or a 7-24C alkenyl group; X is a single bond, -O-, -NH- or -NCH3-; L is a divalent binding group formed from atoms selected the group consisting of C, H, O, N and S atoms; and Ch is diethylene triamine pentaacetic acid) or a salt thereof. COPYRIGHT: (C)2009,JPO&INPIT