Total Synthesis of Thiaplakortone A: Derivatives as Metabolically Stable Leads for the Treatment of Malaria
摘要:
Thiaplakortone A (3a), an antimalarial natural product, was prepared by an operationally simple and scalable synthesis. In our efforts to deliver a lead compound with improved potency, metabolic stability, and selectivity, the synthesis was diverted to access a series of analogues. Compounds, 3a-d showed nanomolar activity against the chloroquine-sensitive (3D7) Plasmodium falciparum line and were more active against the chloroquine- and mefloquine-resistant (Dd2) P. falciparum line. All compounds are "Rule-of-5" compliant, and we show that metabolic stability can be enhanced via modification at either the primary or pyrrole nitrogen. These promising results lay the foundation for the development of this structurally unprecedented natural product.
Synthesis and antimalarial evaluation of amide and urea derivatives based on the thiaplakortone A natural product scaffold
作者:Brett D. Schwartz、Tina S. Skinner-Adams、Katherine T. Andrews、Mark J. Coster、Michael D. Edstein、Donna MacKenzie、Susan A. Charman、Maria Koltun、Scott Blundell、Anna Campbell、Rebecca H. Pouwer、Ronald J. Quinn、Karren D. Beattie、Peter C. Healy、Rohan A. Davis
DOI:10.1039/c4ob01849d
日期:——
A series of amide and urea analogues based on the thiaplakortone A natural product scaffold were synthesised and screened forin vitroantimalarial activity.