Histone deacetylases inhibitors (HDACIs) and methods for treating cancer in a subject in need thereof are disclosed. The HDACIs comprise a compound of Formula X.
or a pharmaceutically acceptable salt thereof. In one embodiment of the invention, R1 is ethyl; R2 is 2-phenylethyl; R3 is hydrogen; R4 is fluoro; R5 is (2E)-3-N-hydroxyamino-3-oxo-propenyl; and R6 is hydrogen, or a salt thereof. In another embodiment of the invention, R1 is ethyl; R2 is 2-phenylethyl; R3 is hydrogen; R4 is (2E)-3-N-hydroxyamino-3-oxo-propenyl; R5 is chloro or fluoro; and R6 is hydrogen.
本发明揭示了组蛋白
去乙酰化酶抑制剂(H
DACIs)及其治疗需要的患者的癌症的方法。H
DACIs包括化合物X的一个衍
生物或其药学上可接受的盐。在本发明的一个实施例中,R1为乙基;R2为2-苯乙基;R3为氢;R4为
氟;R5为(2E)-3-N-羟基
氨基-3-氧代
丙烯基;R6为氢,或其盐。在本发明的另一个实施例中,R1为乙基;R2为2-苯乙基;R3为氢;R4为(2E)-3-N-羟基
氨基-3-氧代
丙烯基;R5为
氯或
氟;R6为氢。