Trifluoro-methanesulfonic acid (1S,8aR)-1-((S)-1-iodo-ethyl)-3-oxo-1,5,8,8a-tetrahydro-oxazolo[3,4-a]pyridin-7-yl ester 在
platinum(IV) oxide 氢气 、
lithium carbonate 作用下,
以
乙酸乙酯 为溶剂,
以75%的产率得到(1R,8aR)-1-ethyl-1,5,6,7,8,8a-hexahydro-[1,3]oxazolo[3,4-a]pyridin-3-one