1. Laboratoire de Chimie Bio-Organique, Département de Pharmacochimie Moléculaire, UMR 5063 CNRS/Université Joseph Fourier-Grenoble I, FR CNRS 2607, BP 138, 5 Avenue de Verdun, F-38243 Meylan, France, and Center for the Study of Emerging and Reemerging Pathogens, Department of Biochemistry and Molecular Biology, UMDNJ-New Jersey Medical School, 185 South Orange Avenue, Newark, New Jersey 07103