Analogues of suberoylanilide hydroxamic acid (SAHA) were prepared by replacing the Zn-binding group with squaric acid, N-hydroxyurea, and 4-hydroxymethyl oxazoline units, also varying the length of the aliphatic chain. No inhibitory activity on HDAC was observed below 1.0 mu M and no cytotoxic activity on different tumor cell lines was seen below 20.0 mu M. (c) 2006 Elsevier Ltd. All rights reserved.
ω-Alkoxy analogues of SAHA (vorinostat) as inhibitors of HDAC: A study of chain-length and stereochemical dependence
A series of omega-alkoxy ethers were prepared with variation of the length of the aliphatic chain of suberoylanilide hydroxamic acid (SAHA, vorinostat). Eight carbon long chain analogues showed the best activity, among which several substituted benzyl ether derivatives exhibited inhibitory activity on HDAC comparable to SAHA, and antiproliferative activity on three human cell lines (NB4, H460, and HCT-116) better than SAHA. However, no significant difference in antiproliferative activity was observed between two enantiomers bearing the benzyl ether moiety. (C) 2007 Published by Elsevier Ltd.