D-丙氨酸甲酯 、 (4E,6E)-(2S,3S)-3-tert-Butoxycarbonylamino-2,6-dimethyl-10-phenyl-deca-4,6-dienoic acid 在
2,3,5-三甲基吡啶 、 N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate 作用下,
以39%的产率得到(R)-2-((4E,6E)-(2S,3S)-3-tert-Butoxycarbonylamino-2,6-dimethyl-10-phenyl-deca-4,6-dienoylamino)-propionic acid methyl ester