tert-butyl L-9-(allyloxycarbonyl)-13-(9H-fluoren-9-yl)-11-oxo-4-(2,2,4,6,7-pentamethyl-2,3-dihydrobenzofuran-5-ylsulfonylimino)-12-oxa-2,3,5,10-tetraazatridecan-1-oate 在
四(三苯基膦)钯 、
N-甲基苯胺 作用下,
以
四氢呋喃 为溶剂,
反应 1.0h,
以93%的产率得到L-2-(((9H-fluoren-9-yl)methoxy)carbonylamino)-5-(2-(tert-butoxycarbonyl)-N'-(2,2,4,6,7-pentamethyl-2,3-dihydrobenzofuran-5-ylsulfonyl)hydrazinecarboximidamido)pentanoic acid