Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/42996

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Title
Norcantharidin analogues: synthesis, anticancer activity and protein phosphatase 1 and 2A inhibition
Author/Creator
Hill, Timothy A.;  Stewart, Scott G.;  Gordon, Christopher P.;  Ackland, Stephen P.;  Gilbert, Jayne;  Sauer, Benjamin;  Sakoff, Jennette A.;  McCluskey, Adam
Institution
The University of Newcastle. Faculty of Science & Information Technology, School of Environmental and Life Sciences
Description
Cantharidin (1) and its derivatives are of significant interest as serine/threonine protein phosphatase 1 and 2A inhibitors. Additionally, compounds of this type have displayed growth inhibition of various tumour cell lines. To further explore both of these inhibition pathways, a number of amide–acid norcantharidin analogues (15–26) were prepared. Compounds 23 and 24, containing two carboxylic acid residues, showed good PP1 and PP2A activity, with IC₅₀ values of ~15 and ~3 μm, respectively. Substituted aromatic amide analogues 45, 48, 49, 52, 53, and 54 also displayed good PP1 and PP2A inhibition, with IC₅₀ values in the range of 15–10 μm (PP1) and 11–5 μm (PP2A). However, bulky ortho substituents on the aromatic ring caused the aromatic ring to be skewed from the NCO planarity, leading to a decrease in PP1 and PP2A inhibition. A number of analogues, 20, 22, 25 and 46, showed excellent tumour growth inhibition, with 46 in particular being more potent than the lead, norcantharidin 2.
Relation
ChemMedChem Vol. 3, Issue 12, p. 1878-1892
Publisher Link
http://dx.doi.org/10.1002/cmdc.200800192
Date
2008
Publisher
Wiley
Keyword(s)
antitumor agents;  inhibitors;  cantharidin;  norcantharidin;  protein phosphatases 1 & 2A
Resource Type
journal article
Identifier
http://hdl.handle.net/1959.13/42996
Identifier
ISSN:1860-7179
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Subject
"ChemMedChem"
 
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