62 Abstract 5 A method of treating a leukemia comprising administering to a subject in need thereof a therapeutically effective amount of a composition comprising a compound of Formula (I) and/or (II) having the structure: OR2 R R1O n OR2 R R1O n I II wherein: 10 ---- represents a single or a double bond R is OH when C----R is C-R, and R is O when C----R is C=R n is 1, 3, 5 or 7 and R1 and R2 are independently hydrogen or acetyl, and/or isomers, stereoisomers or solvates thereof and/or mixtures thereof. 15