(4R,5S)-4-(4,4-dimethyl-2-oxo-1,3-oxazolidine-3-carbonyl)-5'-fluoro-1'-prop-2-enyl-2-sulfanylidenespiro[1,3-oxazolidine-5,3'-indole]-2'-one 、
碘甲烷 在
potassium carbonate 作用下,
以
丙酮 为溶剂,
生成
(3S,4'R)-1-allyl-4'-(4,4-dimethyl-2-oxooxazolidine-3-carbonyl)-5-fluoro-2'-(methylthio)-4'H-spiro[indoline-3,5'-oxazol]-2-one