(2S,3S,8S,9S)-N-Boc Adda 、
cis-2,5-dimethyl pyrrolidine-2,5-dicarboxylate 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62%的产率得到(2S,5R)-1-((4E,6E)-(2S,3S,8S,9S)-3-tert-Butoxycarbonylamino-9-methoxy-2,6,8-trimethyl-10-phenyl-deca-4,6-dienoyl)-pyrrolidine-2,5-dicarboxylic acid dimethyl ester