Compounds according to formula (I) are disclosed
where Q is S, N, or O; X is optional, and can be O═, S═, ═N—NH
2
, ═N—OH, or —OH; Y is optional and can be —N(H)—, O, or C
1
to C
20
hydrocarbon; and R
1
and R
2
are each independently substituted or unsubstituted single-, fused- or multiple-ring aryl or (hetero)cyclic ring systems. Methods of making these compounds, pharmaceutical compositions containing the compounds, and their use, particularly for treating or preventing cancer, are also disclosed.
The present invention relates to a compound of formula XXII and a compound of formula 17ya, which are defined as anywhere in the specification, to a composition comprising the same, and to a method of using thereof in the treatment of various forms of cancer.