N2-(tert-butoxycarbonyl)-Nw-((2,2,4,6,7-pentamethyl-2,3-dihydrobenzofuran-5-yl)sulfonyl)-Larginylglycine 、 4-(tert-butyl) 1-(hex-5-en-1-yl)-L-aspartate 在
(benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate 、
N,N-二异丙基乙胺 作用下,
以
四氢呋喃 为溶剂,
反应 18.0h,
以75%的产率得到4-(tert-butyl) 1-(hex-5-en-1-yl) N
2-(tert-butoxycarbonyl)-N
w-((2,2,4,6,7-pentamethyl-2,3-dihydrobenzofuran-5-yl)sulfonyl)-L-arginylglycyl-L-aspartate