Synthesis of antitrypanosomal 1,2-dioxane derivatives based on a natural product scaffold
作者:Harish Holla、Mehdi Labaied、Ngoc Pham、Ian D. Jenkins、Kenneth Stuart、Ronald J. Quinn
DOI:10.1016/j.bmcl.2011.06.059
日期:2011.8
A short practical synthesis of a new natural product based scaffold (6), based on antitrypanosomal and antimalarial compounds isolated from different Plakortis species is described. The scaffold contains a peroxide unit that is surprisingly stable to chemical manipulation elsewhere in the molecule, enabling it to be elaborated into a small library of derivatives. It is stable to ozonolysis, reductive work-up with dimethylsulfide and the Wittig reaction with stabilized phosphorus ylides. The scaffold along with its Wittig analogues has displayed low to sub-micro molar (0.2-3.3 mu M) antitrypanosomal activity. (C) 2011 Elsevier Ltd. All rights reserved.