| 摘要 |
The present invention provides a cationic lipid, which allow nucleic acids to be easily introduced into cells, represented by formula (I) (wherein: R1 and R2 are, the same or different, each (Z)-pentadecenyl, (Z)-hexadecenyl or (Z)-heptadecenyl, etc, a and b are, the same or different, each 0 to 3, m is 1, the dotted line is a single bond or absent, X1 and X2 are hydrogen atoms, or are combined together to form a single bond or alkylene, X4 is absent or is alkylene, etc X3 is absent or is alkyl, etc, Y is absent or anion, L3 is a single bond, -CO-O- or -O-CO- R3 is hydrogen atoms, alkyl, etc, L1 and L2 are -O-, -CO-O- or -O-CO-) and the like.
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