An in-depth study of the oxirane ring-opening reaction of a pivotal epoxypyrrolidine is reported. The introduction of various carbon- and heteroatom-centered nucleophiles at C4 has been achieved with high regiocontrol. The structures of the major products were assigned on the basis on an X-ray crystallographic study of six examples. A mechanistic study carried out at the B3LYP/6-31G** level of theory
The stereoselective preparation of novel C-alkyl 5-membered ring imino sugars and their biological evaluation with regard to GCS inhibition and cytotoxicity in a murine melanoma model are reported.