Malaria-Infected Mice Are Cured by Oral Administration of New Artemisinin Derivatives
作者:Gary H. Posner、Wonsuk Chang、Lindsey Hess、Lauren Woodard、Sandra Sinishtaj、Aimee R. Usera、William Maio、Andrew S. Rosenthal、Alvin S. Kalinda、John G. D’Angelo、Kimberly S. Petersen、Remo Stohler、Jacques Chollet、Josefina Santo-Tomas、Christopher Snyder、Matthias Rottmann、Sergio Wittlin、Reto Brun、Theresa A. Shapiro
DOI:10.1021/jm701168h
日期:2008.2.1
In four or five chemical steps from the 1,2,4-trioxane artemisinin, a new series of 23 trioxane dimers has been prepared. Eleven of these new trioxane dimers cure malaria-infected mice via oral dosing at 3 x 30 mg/kg. The clinically used trioxane drug sodium artesunate prolonged mouse average survival to 7.2 days with this oral dose regimen. In comparison, animals receiving no drug die typically on day 6-7 postinfection. At only 3 x 10 mg/kg oral dosing, seven dimers prolong the lifetime of malaria-infected mice to days 14-17, more than double the chemotherapeutic effect of sodium artesunate. Ten new trioxane dimers at only a single oral dose of 30 mg/kg prolong mouse average survival to days 8.7-13.7, and this effect is comparable to that of the fully synthetic trioxolane drug development candidate OZ277, which is in phase 11 clinical trials.