“…The mixture of trans-2 and 10 was further purified by another column chromatography (hexane/ AcOEtϭ1/1) to give trans-2, which was characterized as below. (11), (3aR,3bS,8aR)-Hexahydro-2H-furo[3,2:3,4]pyrrolo[1,2-c][1,3]oxazole-2,6-dione (12), and Methyl (S)-3-Methyl-2-oxooxazolidine-4-propionate To an ice-cooled and stirred suspension of LiAlH(Ot-Bu) 3 (890 mg, 3.5 mmol) in THF (8 ml), a solution of the 10 : 1 mixture of trans-2 and 10 (543 mg, 2.35 and 0.23 mmol, respectively) in THF (2 ml) was added. After 30 min, the reaction mixture was poured into water (20 ml).…”