4-Vinyl-1,3-dihydro-isoindole-2-carboxylic acid 5-methoxycarbonyl-pyrrolidin-3-yl ester 、
N-[oct-7-en-2-yl]-L-valine 在
O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate 、
N,N-二异丙基乙胺 作用下,
以
二氯甲烷 为溶剂,
生成 methyl N-[(2R)-oct-7-en-2-yl]-L-valyl-(4R)-4-{[(4-ethenyl-1,3-dihydro-2H-isoindol-2-yl)carbonyl]oxy}-L-prolinate 、 methyl N-[(2S)-oct-7-en-2-yl]-L-valyl-(4R)-4-{[(4-ethenyl-1,3-dihydro-2H-isoindol-2-yl)carbonyl]oxy}-L-prolinate