| abstract |
A compound of Formula (l) or its salt for use in treating HIV infection, wherein: R1 is a C2-C20 optionally substituted carboxyacyl, R2 is a C2-C20 optionally substituted carboxyacyl; and R3 is hydrogen, halogen, amino, optionally substituted mono-or di-alkylamino, or-OR4; R4 is hydrogen, C1-4 alkanoyl, benzoyl, or C2-C20 optionally substituted carboxyacyl; the dashed line represents an optional double bond between C20 and C29; and provided that when R3 is hydrogen, then R1 and R2 are both succinyl, maleyl, fumaroyl or glutaryl. |