3-Bromohomofascaplysin A, a fascaplysin analogue from a Fijian Didemnum sp ascidian

被引:13
作者
Lu, Zhenyu [1 ]
Ding, Yuanqing [2 ,3 ]
Li, Xing-Cong [2 ,3 ]
Djigbenou, Daignon R. [4 ,5 ]
Grimberg, Brian T. [5 ]
Ferreira, Daneel [2 ,3 ]
Ireland, Chris M. [1 ]
Van Wagoner, Ryan M. [1 ]
机构
[1] Univ Utah, Dept Med Chem, Salt Lake City, UT 84112 USA
[2] Univ Mississippi, Dept Pharmacognosy, University, MS 38677 USA
[3] Univ Mississippi, Sch Pharm, Natl Ctr Nat Prod Res, University, MS 38677 USA
[4] Case Western Reserve Univ, Div Infect Dis, Cleveland, OH 44106 USA
[5] Case Western Reserve Univ, Ctr Global Hlth & Dis, Cleveland, OH 44106 USA
关键词
Fascaplysin analogues; Ascidian; Antimalarial; Absolute configuration; Experimental and theoretically calculated ECD; CRYPTOLEPINE ANALOGS; FLOW-CYTOMETRY; MARINE; ALKALOIDS; ANTIMALARIAL; THIAZOLE; PEPTIDES; MALARIA; PIGMENT; CDK4;
D O I
10.1016/j.bmc.2011.05.046
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
A new fascaplysin analogue, 3-bromohomofascaplysin A (1), along with two known analogues, homofascaplysin A (2) and fascaplysin (3), were isolated from a Fijian Didemnum sp. ascidian. The absolute configurations of 3-bromohomofascaplysin A (1) and homofascaplysin A (2) were determined via experimental and theoretically calculated ECD spectra. The differential activities of 1-3 against different blood-borne life stages of the malaria pathogen Plasmodium falciparum were assessed. Homofascaplysin A (2) displayed an IC(50) of 0.55 +/- 0.11 nM against ring stage parasites and 105 +/- 38 nM against all live parasites. Given the stronger resistance of ring stage parasites against most current antimalarials relative to the other blood stages, homofascaplysin A (2) represents a promising agent for treatment of drug resistant malaria. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码:6604 / 6607
页数:4
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