| abstract |
A compound of formula (I) or its enantiomers or diastereoisomers thereof:wherein: A is a 5- or 6-membered homocyclic ring, or a 5- or 6-membered heterocyclic ring containing 1 or more heteroatoms; X is H and W is OH; or X and W together form a carbonyl group or an epoxide; R1 is H; or one or two substituents; Y is phenyl optionally mono- or di-substituted, said phenyl ring being optionally fused with a saturated or unsaturated 4 to 6-membered ring optionally containing a heteroatom; or Y is a heterocycle (Het) containing one or more heteroatoms, said Het optionally mono- or di-substituted, said Het being optionally fused with a saturated or unsaturated 4 to 6-membered ring optionally containing a heteroatom; or Y is ethylene-phenyl, said ethylene moiety being optionally mono-substituted, wherein said phenyl ring is optionally mono- or di-substituted, said phenyl ring being optionally fused with a saturated or unsaturated 4 to 6-membered ring optionally containing a heteroatom; or Y is ethylene-Het, said ethylene moiety being optionally mono-substituted, wherein Het is optionally mono- or di-substituted; said Het being optionally fused with a saturated or unsaturated 4 to 6-membered ring optionally containing a heteroatom; R3 is selected from the group consisting of: lower alkyl, lower cycloalkyl, lower alkylene, aryl or lower aralkyl, all of which optionally mono- or di-substituted, said lower cycloalkyl, aryl, lower aralkyl or Het being optionally fused with a saturated or unsaturated 4 to 6-membered ring optionally containing a heteroatom; and R4 is a carboxylic acid, a salt or an ester thereof.The compounds of the invention may be used as inhibitors of the papilloma virus E1-E2-DNA complex. The invention further provides a method of treating or preventing human papilloma virus infection. |