One-pot, multi-component synthesis and structure-activity relationships of peptoid-based histone deacetylase (HDAC) inhibitors targeting malaria parasites

European Journal of Medicinal Chemistry
Daniela DiedrichFinn K Hansen

Abstract

Malaria drug discovery has shifted from a focus on targeting asexual blood stage parasites, to the development of drugs that can also target exo-erythrocytic forms and/or gametocytes in order to prevent malaria and/or parasite transmission. In this work, we aimed to develop parasite-selective histone deacetylase inhibitors (HDACi) with activity against the disease-causing asexual blood stages of Plasmodium malaria parasites as well as with causal prophylactic and/or transmission blocking properties. An optimized one-pot, multi-component protocol via a sequential Ugi four-component reaction and hydroxylaminolysis was used for the preparation of a panel of peptoid-based HDACi. Several compounds displayed potent activity against drug-sensitive and drug-resistant P. falciparum asexual blood stages, high parasite-selectivity and submicromolar activity against exo-erythrocytic forms of P. berghei. Our optimization study resulted in the discovery of the hit compound 1u which combines high activity against asexual blood stage parasites (Pf 3D7 IC50: 4 nM; Pf Dd2 IC50: 1 nM) and P. berghei exo-erythrocytic forms (Pb EEF IC50: 25 nM) with promising parasite-specific activity (SIPf3D7/HepG2: 2496, SIPfDd2/HepG2: 9990, and SIPbEEF/HepG2: 4...Continue Reading

Citations

Dec 29, 2020·European Journal of Medicinal Chemistry·Marcel K W MackwitzFinn K Hansen
Apr 7, 2021·European Journal of Medicinal Chemistry·Mehak ChauhanBiswajit Saha
Jun 30, 2021·Journal of Medicinal Chemistry·Flore NardellaPaola B Arimondo
Nov 26, 2019·Journal of Medicinal Chemistry·Viktoria KriegerFinn K Hansen
Sep 8, 2021·ACS Infectious Diseases·Jennifer E CollinsDebopam Chakrabarti

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