(R)-2-Amino-4-dimethylcarbamoyl-butyric acid methyl ester 在
三乙胺 、
三氟乙酸 、 N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate 作用下,
生成
(R)-2-((4E,6E)-(2S,3S,8S,9S)-3-Acetylamino-9-methoxy-2,6,8-trimethyl-10-phenyl-deca-4,6-dienoylamino)-4-dimethylcarbamoyl-butyric acid methyl ester