Enantioselective Synthesis of (2 S,3 S)- epi-Oxetin and Its Incorporation into Conformationally Constrained Pyrrolidinyl PNA with an Oxetane Backbone. - Seankongsuk, Pattarakiat; Vchirawongkwin, Viwat; Bates, Roderick W.; Padungros, Panuwat; Vilaivan, Tirayut (Asian Journal of Organic Chemistry, 2017)