Scientific Publications

Total synthesis and biological mode of action of largazole: a potent class I histone deacetylase inhibitor.

Publication TypeJournal Article
AuthorsBowers, A., West N., Taunton J., Schreiber SL, Bradner JE, and Williams RM
AbstractThe efficient total synthesis of the recently described natural substance largazole (1) and its active metabolite largazole thiol (2) is described. The synthesis required eight linear steps and proceeded in 37% overall yield. It is demonstrated that largazole is a pro-drug that is activated by removal of the octanoyl residue from the 3-hydroxy-7-mercaptohept-4-enoic acid moiety to generate the active metabolite 2, which is an extraordinarily potent Class I histone deacetylase inhibitor. Synthetic largazole and 2 have been evaluated side-by-side with FK228 and SAHA for inhibition of HDACs 1, 2, 3, and 6. Largazole and largazole thiol were further assayed for cytotoxic activity against a panel of chemoresistant melanoma cell lines, and it was found that largazole is substantially more cytotoxic than largazole thiol; this difference is attributed to differences in the cell permeability of the two substances.
Year of Publication2008
JournalJournal of the American Chemical Society
Date Published (YYYY/MM/DD)2008/08/20
ISSN Number0002-7863