2-((S)-1-((S)-2-((S)-2-((S)-2-amino-4-methylpentanamido)-N-methyl-3-phenylpropanamido)-4-methylpentanamido)-3-methylbutyl)thiazole-4-carboxylic acid 在
O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate 、
N,N-二异丙基乙胺 、
Methanaminium,N-[(dimethylamino)(3H-1,2,3-triazolo[4,5-b]pyridin-3-yloxy)methylene]-N-methyl-, hexafluorophosphate(1-) 、
3-(二乙氧基邻酰氧基)-1,2,3-苯并三嗪-4-酮 作用下,
以
二氯甲烷 、
乙腈 为溶剂,
反应 12.0h,
以4%的产率得到(4S,7S,10S,13S)-7-benzyl-9-methyl-4,10,13-tris(2-methylpropyl)-15-thia-3,6,9,12,17-pentazabicyclo[12.2.1]heptadeca-1(16),14(17)-diene-2,5,8,11-tetrone