Brugel, Todd A.; Hudlicky, Tomas; Clark, Michael P.; Golebiowski, Adam; Sabat, Mark; Endoma, Mary Ann A.; Bui, Vu; Adams, David; Laufersweiler, Matthew J.; Maier, Jennifer A.; Bookland, Roger G.; De, Biswanath Tetrahedron Letters, 2006 , vol. 47, # 19 p. 3195 - 3198