| abstract |
Novel amidine derivatives of general formula (1); and drug carriers (such as liposomes or emulsions) comprising the derivatives, which can enclose genetic materials or drugs and transfer them to cells or affected sites efficiently and safely, wherein A is an aromatic ring; R?1 and R2¿ are each independently C¿10?-C25 alkyl or alkenyl; X and Y are each independently -O-, -S-, -COO-, -OCO-, -CONH- or -NHCO-; m is 0 or 1; and n is 0 or a natural number of 1 to 6. |