Fmoc-Pbf-L-精氨酸 在
N,N-二异丙基乙胺 、 N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate 、
methyl L-2-allylprolinate hydrochloride 作用下,
以
乙腈 为溶剂,
生成 (S)-(9H-fluoren-9-yl)methyl 2-oxo-1-(N-(2,2,4,6,7-pentamethyl-2,3-dihydrobenzofuran-5-ylsulfonyl)carbamimidoyl)piperidin-3-ylcarbamate