Patent ID: 6391916
Filing Date: 2002-05-21
Classification: C07C,C07D,C07F

Abstract:
A compound of the general formula whereinR1, R2, R3 and R4 each independently represent a hydrogen atom or a group â€”OR, where R represents a hydrogen atom, an optionally substituted alkyl or acyl group or a moiety which is capable of binding to a nucleic acid; and/or, R1 and R2, R2 and R3 or R3 and R4 together with the interjacent carbon atoms represent an optionally substituted cycloalkyl group; X represents a hydroxyl group or an optionally substituted alkoxy or acyloxy group; and Y represents an optionally substituted aryl or heteroaryl group; or, in the case of formula IB, X and Y together with the interjacent carbon atom represent an optionally substituted heterocyclic group; or a salt thereof; with the proviso that, when R1 represents an anthraquinone-2-carbonyloxy group, X represents a hydroxyl group or, in the case of formula IB, an ethoxy group and Y represents a phenyl group, then one of R2, R3 and R4 represents a group OR or R2 and R3 or R3 and R4 together with the interjacent carbon atoms represent an optionally substituted cycloalkyl group.