The present invention discloses a
coumarin HDAC6 inhibitor and its preparation method and application, belonging to the field of chemical
medicine technology. The present invention provides
coumarin compounds shown in Formula I, Formula II and Formula III. Based on the structure of
coumarin, the characteristic group of HDAC6 inhibitor
hydroxamic acid is introduced to achieve good homologous selectivity for HDAC1 / 6; at the
enzyme level,
cell level and animal experiment level, it is verified that the compound has excellent target inhibition effect; by studying the example of HDAC6-NF-κB participating in the
inflammatory response of colonic tissue, a new practical basis is provided for the treatment of
ulcerative colitis. The compound provided by the present invention can be used as a new HDAC6 inhibitor to prevent and treat HDAC6-related diseases, especially it is expected to solve the shortcomings of some current
small molecule drugs for the treatment of
ulcerative colitis, such as poor relief effect and large side effects.