Structure-Activity Relationships for Inhibition of Cysteine Protease Activity and Development of
<i>Plasmodium falciparum</i>
by Peptidyl Vinyl Sulfones
作者:Bhaskar R. Shenai、Belinda J. Lee、Alejandro Alvarez-Hernandez、Pek Y. Chong、Cory D. Emal、R. Jeffrey Neitz、William R. Roush、Philip J. Rosenthal
DOI:10.1128/aac.47.1.154-160.2003
日期:2003.1
studies showed that peptidyl vinyl sulfone inhibitors of falcipain-2 blocked the development of P. falciparum in culture and exerted antimalarial effects in vivo. We now report the structure-activity relationships for inhibition of falcipain-2, falcipain-3, and parasite development by 39 new vinyl sulfone, vinyl sulfonate ester, and vinyl sulfonamide cysteine protease inhibitors. Levels of inhibition of
恶性疟原虫半胱氨酸蛋白酶falcipain-2和falcipain-3似乎是红细胞内疟原虫水解血红蛋白所必需的。先前的研究表明,falcipain-2的肽基乙烯基砜抑制剂在培养物中阻断了恶性疟原虫的发展,并在体内发挥了抗疟作用。现在,我们报告了39种新的乙烯基砜,乙烯基磺酸酯和乙烯基磺酰胺半胱氨酸蛋白酶抑制剂抑制falcipain-2,falcipain-3和寄生虫发育的构效关系。对falcipain-2和falcipain-3的抑制水平通常相似,并且鉴定出许多有效的化合物。在低纳摩尔浓度下抑制恶性疟原虫发育的最佳抗疟化合物是苯基乙烯基砜,乙烯基磺酸酯,和具有P(2)亮氨酸部分的乙烯基磺酰胺。我们的结果确定了falcipain抑制和抗寄生虫活性的独立结构相关性,并表明肽基乙烯基砜有望作为抗疟药。