主权项 |
1. A compound having a formula:or a stereoisomer, an optical isomer, an enantiomer, a racemic mixture, or a stereoisomeric mixture thereof, or a pharmaceutically acceptable salt thereof, wherein:
(i) A1, A2 and A3 are each independently selected from the group consisting of O and S; (ii) R1 is selected from the group consisting of eicosanyl and (2-octyl)dodecyl; (iii) R2 is wherein X is a C1-25 alkyl, Y is selected from the group consisting of: —OH, —H, alkyl, alkoxy, halogen, acetoxy and an aromatic functional group; and
Z is selected from the group consisting of: wherein R′ is C1-4 alkyl; and (iv) R3 is selected from the group consisting of H, acyl, alkyl, phosphate, phosphocholine, phosphoethanolamine, phosphoethanolamine-N-glutaric acid, phosphoserine, and phosphoinositol. |