The present invention relates to compounds represented by formula (I) or composition comprising at least one of such compounds, which are inhibitors of histone deacetylase. The detailed description of these compounds is disclosed in the Description. These compounds and the composition comprising the same may be useful as medicaments for the treatment of proliferative disorders as well as other diseases involving, relating to or associated with enzymes having histone deacetylase (HDAC) activities.
