Full details of the concise and convergent synthesis (eight steps, 19% overall yield), its extension to the preparation of a series of key analogues, and the molecular target and pharmacophore of largazole are described. Central to the synthesis of largazole is a macrocyclization reaction for formation of the strained 16-membered depsipeptide core followed by an olefin cross-metathesis reaction for
Synthesis and Activity of Largazole Analogues with Linker and Macrocycle Modification
作者:Yongcheng Ying、Yanxia Liu、Seong Rim Byeon、Hyoungsu Kim、Hendrik Luesch、Jiyong Hong
DOI:10.1021/ol801532s
日期:2008.9.18
To characterize largazole's structural requirements for histone deacetylase (HDAC) inhibitory and anti proliferative activities, a series of analogues with modifications to the side chain or 16-membered macrocycle were prepared and biologically evaluated. Structure-activity relationships suggested that the four-atom linker between the macrocycle and octanoyl group in the side chain and the (S)-configuration at the C17 position are critical to repression of HDAC activity. However, the valine residue in the macrocycle can be replaced with alanine without significant loss of activity.