| 摘要 |
Compound of Formula (I): wherein R1, R2 and R3, which are identical or different, are hydrogen atom or C1-4 alkyl, and R4 is a saturated C6-9 linear, branched or cyclic hydrocarbon radical or a radical of Formula (II) wherein X is S or O, Y is a hydrogen atom or up to 2 halogen atoms, Z is a single bond or a divalent radical being O, S, -CR2-, in which R is hydrogen or C1-4 alkyl, or other divalent radical with 2-10 carbon atoms and, optionally, O and/or S atoms linked in the form of a chain, wherein-if the radicals contain 2 or more O and/or S atoms-the latter are separated from one another by at least 2 carbon atoms, and it also being possible for 2 adjacent carbon atoms to be linked together by a double bond, and the free valencies of the carbon atoms being saturated by a hydrogen atom and/or C1-4 alkyl groups, Ar is an aromatic ring system which has up to two rings and which may be substituted by up to three radicals from the group of fluorine, chlorine, bromine, methoxy, C1-4 alkyl, trifluoromethyl and trifluoromethoxy, salts and/or solvates thereof, for use in the treatment of a tumor bearing deregulated MYC oncoproteins, wherein said compound is capable of increasing UTR-dependent expression of at least one MYC gene.
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