A lipid membrane structure includes, as lipid components, a lipid compound represented by Formula (I):
(R
1
)(R
2
)C(OH)—(CH
3
)
a
—(O—CO)
b
—X (I)
[in the formula, a represents an integer of 3 to 5; b represents an integer of 0 or 1; R
1
and R
2
each independently represents a linear hydrocarbon group that may have —CO—O—; and X represents a 5- to 7-membered non-aromatic heterocyclic group or a group represented by Formula (B) (in the formula, d represents an integer of 0 to 3, and R
3
and R
4
each independently represents a C
1-4
alkyl group or a C
2-4
alkenyl group, where, R
3
and R
4
may be bonded to each other to form a 5- to 7-membered non-aromatic heterocycle (where, one or two C
1-4
alkyl groups or C
2-4
alkenyl groups may be substituted on the ring)].
一种脂质膜结构包括以下脂质成分:由式(I)表示的脂质化合物:(R1)(R2)C(OH)—(
CH3)a—(O—CO)b—X (I)[在该式中,a表示3至5的整数;b表示0或1的整数;R1和R2各自独立地表示一个线性碳氢基团,可能具有—CO—O—;X表示一个5至7个成员的非芳香杂环基团或由式(B)表示的基团(在该式中,d表示0至3的整数,R3和R4各自独立地表示一个C1-4烷基基团或C2-4烯基基团,其中,R3和R4可以连接在一起形成一个5至7个成员的非芳香杂环(其中,环上可能有一个或两个C1-4烷基基团或C2-4烯基基团被取代)]。