abstract |
Compounds which are Spiruchostatin analogues of the general formula (I) or (I′), isosteres thereof and pharmaceutically acceptable salts thereof are found to inhibit HDAC wherein R 1 , R 2 , R 3 and R 4 are the same or different and represent an amino acid side chain moiety and each R 6 is the same or different and represents hydrogen or C 1 -C 4 alkyl. |