2,2,4,4-Tetramethyl-oxazolidine-3-carboxylic acid (E)-(S)-4-dibenzylamino-8-phenyl-oct-5-en-7-ynyl ester 在
甲醇 、 s-BuLi*(-)-sparteine 作用下,
生成 2,2,4,4-Tetramethyl-oxazolidine-3-carboxylic acid (1R,2R,3S)-3-dibenzylamino-2-(3-phenyl-propa-1,2-dienyl)-cyclopentyl ester