Novartis AG
Lipids and lipid compositions for the delivery of active agents

Abstract:

This invention provides for a compound of formula (I): ##STR00001## or a pharmaceutically acceptable salt thereof, wherein R.sup.A, R.sup.B, R.sub.2 and R.sub.4 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.