Synthesis and biological characterization of the histone deacetylase inhibitor largazole and C7- modified analogues.

Abstract:

:Largazole 4a and analogues with modifications at the C7 position, as well as 2,4'-bithiazole 5a, have been synthesized using an acyclic cross-metathesis of the corresponding depsipeptide structures assembled by N-C6(O) or C15(O)-N lactam formation. Similar to the parent system 4a, the series of largazole depsipeptides 4b-d, but not 2,4'-bithiazole 5a, showed a marked inhibition of recombinant HDAC1 and selectivity over HDAC4, as well as strong pro-apoptotic effects on the NB4 leukemia cell line, but they failed to induce differentiation to mature granulocytes. Functional assays of the analogues correlated with the in vitro activities, as shown by increased H3 and alpha-tubulin acetylation levels and p21(WAF1/CIP1) up-regulation in NB4 cells. The activity of the natural product HDACi largazole 4a is not significantly altered by the presence of groups of different size (H, Et, Ph) at C7 on the dihydrothiazole ring.

journal_name

J Med Chem

authors

Souto JA,Vaz E,Lepore I,Pöppler AC,Franci G,Alvarez R,Altucci L,de Lera AR

doi

10.1021/jm100244y

subject

Has Abstract

pub_date

2010-06-24 00:00:00

pages

4654-67

issue

12

eissn

0022-2623

issn

1520-4804

journal_volume

53

pub_type

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