HIGHER FATTY ACID TETRAESTER AND AMIDE DERIVATIVE HAVING DIETHYLENETRIAMINE TYPE METAL CHELATE STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a compound exhibiting excellent solubility and the like and suitable for a liposome contrast agent selective for a lesion such as a vascular disease or the like.;SOLUTION: The compound or a salt thereof is represented by general formula (I) [wherein R¹, R², R³ and R⁴ are each an alkyl group or an alkenyl group; X¹ and X² are each a single bond, -O-or-N(Z¹)-(wherein Z¹ is a hydrogen atom or an alkyl group); X³, X⁴, X⁵, X⁶ and X⁷ are each-O- or -N(Z²)-; n is an integer of 1-10; and L is a bivalent linking group].;COPYRIGHT: (C)2009,JPO&INPIT