This invention provides for a compound of formula (I): or a pharmaceutically acceptable salt thereof, wherein R1–R4, L and X are defined herein. The compounds of formula (I) and pharmaceutically acceptable salts thereof are cationic lipids useful in the delivery of biologically active agents to cells and tissues.
这项发明提供了一个式(I)的化合物,或其药用可接受的盐,其中R1-R4、L和X在此处被定义。式(I)的化合物及其药用可接受的盐是在将
生物活性剂传递给细胞和组织中时有用的阳离子脂质。