The aforementioned reliance on polar bond disconnections (2e -logic), necessitate precise choreography of protecting/functional group manipulations. This study builds on the pioneering work of Seebach and co-workers who employed oxazolidinebased auxiliaries through the principle of "self-regeneration of stereocenters" (SRS, Figure ). In SRS, simple aminoacid feedstocks are protected at a distal site with high diastereoselectivity.