(2S,3aS,8aS)-methyl 3a-{3-[(2S,5R)-5-benzyl-3,6-dioxopiperazin-2-ylmethyl]-1H-indol-1-yl}-1,2,3,3a,8,8a-hexahydropyrrolo[2,3-b]indole-2-carboxylate 、
Fmoc-D-亮氨酸 在
三乙胺 、 Methanaminium,N-[(dimethylamino)(3H-1,2,3-triazolo[4,5-b]pyridin-3-yloxy)methylene]-N-methyl-, hexafluorophosphate(1-) 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
生成 methyl (2S,3aR,8bS)-8b-[3-[[(2S,5R)-5-benzyl-3,6-dioxopiperazin-2-yl]methyl]indol-1-yl]-3-[(2R)-2-(9H-fluoren-9-ylmethoxycarbonylamino)-4-methylpentanoyl]-1,2,3a,4-tetrahydropyrrolo[2,3-b]indole-2-carboxylate