L-苯基丙氨酸叔丁酯 、
(S)-4-{2-[(3aR,4S,6S,6aR)-6-((R)-2,2-Dimethyl-[1,3]dioxolan-4-yl)-2,2-dimethyl-tetrahydro-furo[3,4-d][1,3]dioxol-4-yl]-2,2-difluoro-ethyl}-2,2-bis-trifluoromethyl-oxazolidin-5-one 以
乙醚 为溶剂,
反应 24.0h,
以50%的产率得到(S)-2-{(S)-2-Amino-4-[(3aR,4S,6S,6aR)-6-((R)-2,2-dimethyl-[1,3]dioxolan-4-yl)-2,2-dimethyl-tetrahydro-furo[3,4-d][1,3]dioxol-4-yl]-4,4-difluoro-butyrylamino}-3-phenyl-propionic acid tert-butyl ester