Structure-activity analysis of CJ-15,801 analogues that interact with Plasmodium falciparum pantothenate kinase and inhibit parasite proliferation.

Abstract:

:Survival of the human malaria parasite Plasmodium falciparum is dependent on pantothenate (vitamin B5), a precursor of the fundamental enzyme cofactor coenzyme A. CJ-15,801, an enamide analogue of pantothenate isolated from the fungus Seimatosporium sp. CL28611, was previously shown to inhibit P. falciparum proliferation in vitro by targeting pantothenate utilization. To inform the design of next generation analogues, we set out to synthesize and test a series of synthetic enamide-bearing pantothenate analogues. We demonstrate that conservation of the R-pantoyl moiety and the trans-substituted double bond of CJ-15,801 is important for the selective, on-target antiplasmodial effect, while replacement of the carboxyl group is permitted, and, in one case, favored. Additionally, we show that the antiplasmodial potency of CJ-15,801 analogues that retain the R-pantoyl and trans-substituted enamide moieties correlates with inhibition of P. falciparum pantothenate kinase (PfPanK)-catalyzed pantothenate phosphorylation, implicating the interaction with PfPanK as a key determinant of antiplasmodial activity.

journal_name

Eur J Med Chem

authors

Spry C,Sewell AL,Hering Y,Villa MVJ,Weber J,Hobson SJ,Harnor SJ,Gul S,Marquez R,Saliba KJ

doi

10.1016/j.ejmech.2017.08.050

subject

Has Abstract

pub_date

2018-01-01 00:00:00

pages

1139-1147

eissn

0223-5234

issn

1768-3254

pii

S0223-5234(17)30661-X

journal_volume

143

pub_type

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