The antiplasmodial activity of norcantharidin analogs

被引:23
作者
Bajsa, Joanna [1 ]
McCluskey, Adam [2 ]
Gordon, Christopher P. [2 ]
Stewart, Scott G. [2 ]
Hill, Timothy A. [2 ]
Sahu, Rajnish [3 ]
Duke, Stephen O. [1 ]
Tekwani, Babu L. [3 ]
机构
[1] ARS, USDA, Nat Prod Utilizat Res Unit, University, MS 38677 USA
[2] Univ Newcastle, Sch Environm & Life Sci, Callaghan, NSW 2308, Australia
[3] Univ Mississippi, Sch Pharm, Natl Ctr Nat Prod Res, University, MS 38677 USA
关键词
Plasmodium falciparum; Antimalarial drugs; Cantharidin; Protein phosphatase inhibitors; PROTEIN PHOSPHATASE 2A; ANTICANCER ACTIVITY; CANTHARIDIN ANALOGS; INHIBITION; CELL; MALARIA; PP2A; REGULATOR; APOPTOSIS; FAMILY;
D O I
10.1016/j.bmcl.2010.09.004
中图分类号
R914 [药物化学];
学科分类号
100701 ;
摘要
The antiplasmodial activities of sixty norcantharidin analogs were tested in vitro against a chloroquine sensitive (D6, Sierra Leone) and chloroquine resistant (W2) strains of Plasmodium falciparum. Forty analogs returned IC(50) values <500 mu M against at least one of the P. falciparum strains examined. The ring open compound 24 ((1S,4R)-3-(allylcarbamoyl)-7-oxabicyclo[2.2.1]heptane-2-carboxylic acid) is the most active aliphatic analog (D6 IC(50) = 3.0 +/- 0.0 and W2 IC(50) = 3.0 +/- 0.8 mu M) with a 20-fold enhancement relative to norcantharidin. Surprisingly, seven norcantharimides also displayed good antiplasmodial activity with the most potent, 5 returning D6 = 8.9 +/- 0.9 and W2 IC(50) = 12.5 +/- 2.2 mu M, representing a fivefold enhancement over norcantharidin. (C) 2010 Published by Elsevier Ltd.
引用
收藏
页码:6688 / 6695
页数:8
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