Potent Antimalarial Activity of Two Arenes Linked with Triamine Designed To Have Multiple Interactions with Heme
作者:Yosuke Sakata、Kosuke Yabunaka、Yuko Kobayashi、Hirohisa Omiya、Naoki Umezawa、Hye-Sook Kim、Yusuke Wataya、Yoshimi Tomita、Yosuke Hisamatsu、Nobuki Kato、Hirokazu Yagi、Tadashi Satoh、Koichi Kato、Haruto Ishikawa、Tsunehiko Higuchi
DOI:10.1021/acsmedchemlett.8b00222
日期:2018.10.11
Based on the idea that compounds designed to exhibit high affinity for heme would block hemozoin formation, a critical heme-detoxification process for malarial parasites, we synthesized a series of compounds with two pi-conjugated moieties at terminal amino groups of triamine. These compounds exhibited moderate to high antimalarial activities in vitro toward both chloroquine-sensitive and chloroquine-resistant Plasmodium falciparum. In a P. berghei-infected mouse model, 3a and 12a showed potent antimalarial activities compared to artesunate, as well as a prolonged duration of antimalarial effect. We found a good correlation between protective activity against hemin degradation and antimalarial activity. Compounds 8b and 3a strongly inhibited hemozoin formation catalyzed by heme detoxification protein.