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Merck

Spiroindolones, a potent compound class for the treatment of malaria.

Science (New York, N.Y.) (2010-09-04)
Matthias Rottmann, Case McNamara, Bryan K S Yeung, Marcus C S Lee, Bin Zou, Bruce Russell, Patrick Seitz, David M Plouffe, Neekesh V Dharia, Jocelyn Tan, Steven B Cohen, Kathryn R Spencer, Gonzalo E González-Páez, Suresh B Lakshminarayana, Anne Goh, Rossarin Suwanarusk, Timothy Jegla, Esther K Schmitt, Hans-Peter Beck, Reto Brun, Francois Nosten, Laurent Renia, Veronique Dartois, Thomas H Keller, David A Fidock, Elizabeth A Winzeler, Thierry T Diagana
ABSTRACT

Recent reports of increased tolerance to artemisinin derivatives--the most recently adopted class of antimalarials--have prompted a need for new treatments. The spirotetrahydro-beta-carbolines, or spiroindolones, are potent drugs that kill the blood stages of Plasmodium falciparum and Plasmodium vivax clinical isolates at low nanomolar concentration. Spiroindolones rapidly inhibit protein synthesis in P. falciparum, an effect that is ablated in parasites bearing nonsynonymous mutations in the gene encoding the P-type cation-transporter ATPase4 (PfATP4). The optimized spiroindolone NITD609 shows pharmacokinetic properties compatible with once-daily oral dosing and has single-dose efficacy in a rodent malaria model.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Cycloheximide, Biotechnology Performance Certified
Sigma-Aldrich
Cycloheximide, from microbial, ≥94% (TLC)
Sigma-Aldrich
Anisomycin from Streptomyces griseolus, ≥98% (HPLC), solid
Supelco
Cycloheximide, PESTANAL®, analytical standard
Sigma-Aldrich
Cycloheximide solution, Ready-Made Solution, microbial, 100 mg/mL in DMSO, Suitable for cell culture
Sigma-Aldrich
Thapsigargin, ≥98% (HPLC), solid film