| abstract |
Hsp90 inhibitors having are provided having the formula: (I) with a 2′,4′,5′-substitution pattern on the right-side aryl moiety. X1 represents two substituents, which may be the same or different, disposed in the 4′ and 5′ positions on the aryl group, wherein X1 is selected from halogen, alkyl, alkoxy, halogenated alkoxy, hydroxyalkyl, pyrollyl, optionally substituted aryloxy, alkylamino, dialkylamino, carbamyl, amido, alkylamido dialkylamido, acylamino, alkylsulfonylamido, trihalomethoxy, trihalocarbon, thioalkyl, SO 2 alkyl, COO-alkyl, KH 2 , OH, CN, SO 2 X 5 , NO 2 , NO, C═SR 2 NSO 2 X 5 , C═OR 2 , where X 5 is F, NH2, alkyl or H, and R 2 is alkyl, NH 2 , NH-alkyl or O-alkyl, C 1 to C 6 alkyl or alkoxy; or wherein X 1 has the formula —O—(CH 2 ) n —O—, wherein n is an integer from 0 to 2, preferably 1 or 2, and one of the oxygens is bonded at the 5′-position and the other at the 4′-position of the aryl ring. The compounds are useful in cancer therapy and as radioimaging ligands. |