An investigation of the Lewis acid mediated 1,3-dipolar cycloaddition between N-benzyl-C-(2-pyridyl)nitrone and allylic alcohol. Direct entry to isoxazolidinyl C-nucleosidesElectronic supplementary information (ESI) available: optimized geometries (PDB format). See http://www.rsc.org/suppdata/ob/b3/b304112c/ | Publicación