6-[(2S,5S,8S,14S,17S)-17-tert-Butoxycarbonylmethyl-5-((R)-1-tert-butoxy-ethyl)-14-tert-butoxymethyl-8-((S)-sec-butyl)-3,6,9,12,15,18-hexaoxo-1,4,7,10,13,16-hexaaza-cyclooctadec-2-yl]-hexanoic acid 在
(benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate
盐酸羟胺 、
1-羟基苯并三唑 、
三乙胺 、
三氟乙酸 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 6.0h,
生成 [(2S,5S,8S,11S,17S)-11-((S)-sec-Butyl)-5-(5-hydroxycarbamoyl-pentyl)-8-((R)-1-hydroxy-ethyl)-17-hydroxymethyl-3,6,9,12,15,18-hexaoxo-1,4,7,10,13,16-hexaaza-cyclooctadec-2-yl]-acetic acid