期刊
JOURNAL OF MEDICINAL CHEMISTRY
卷 64, 期 4, 页码 2291-2309出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jmedchem.1c00034
关键词
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资金
- Medicines for Malaria Venture (MMV)
- Strategic Innovation Partnerships (SHIP) unit of the South African Medical Research Council
- South African Technology Innovation Agency (TIA) [MMV18/0001, MMV08/0015]
- South African National Research Foundation [UID: 64767, UID: 84627, UID: 64763]
- Intramural Research Program of the National Center for Advancing Translational Sciences, National Institutes of Health
- Department of Defense [W81XWH-15-2-0033]
A novel series of compounds was identified from a high-throughput screening campaign against Plasmodium falciparum, showing activity against multiple stages of the parasite lifecycle and providing a promising starting point for medicinal chemistry optimization and biological profiling. Further studies revealed compounds with low nanomolar asexual blood-stage activity and strong gametocyte sterilizing properties, which translated to transmission-blocking activity in standard assays. Mechanistic studies suggested the involvement of the P. falciparum cyclic amine resistance locus in resistance development.
A novel diazaspiro[3.4]octane series was identified from a Plasmodium falciparum whole-cell high-throughput screening campaign. Hits displayed activity against multiple stages of the parasite lifecycle, which together with a novel sp(3)-rich scaffold provided an attractive starting point for a hit-to-lead medicinal chemistry optimization and biological profiling program. Structure-activity- relationship studies led to the identification of compounds that showed low nanomolar asexual blood-stage activity (<50 nM) together with strong gametocyte sterilizing properties that translated to transmission-blocking activity in the standard membrane feeding assay. Mechanistic studies through resistance selection with one of the analogues followed by whole-genome sequencing implicated the P. falciparum cyclic amine resistance locus in the mode of resistance.
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