S1 Supporting Information (SI) Stereo- and regiochemical transannular cyclization of a common hexahydro- 1H-azonine to afford three different indolizidinone dipeptide mimetics N. D. Prasad Atmuri, William D. Lubell* Département de Chimie, Université ́ de Montréal, P.O. Box 6128, Station Centre-ville, Montréal, Québec H3C 3J7, Canada. E-mail: lubell@chimie.umontreal.ca Table of content: Table S1……………………………………………………………………………………S2 X-ray data.............................................................................................................................S3 NMR Spectra …………………………………………………………………………….S47