(4S,9S,10R)-4-[(2R,3R,4R)-8-amino-3-[tert-butyl(dimethyl)silyl]oxy-4-methyloct-6-yn-2-yl]-14,16-dimethoxy-9-methyl-10-tri(propan-2-yl)silyloxy-3-oxabicyclo[10.4.0]hexadeca-1(12),13,15-trien-6-yn-2-one 、
(2R,3S)-3-((tert-butyldimethylsilyl)oxy)-2-methylhexanoic acid 在
1-羟基苯并三唑 、 O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate 、
N,N-二异丙基乙胺 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 4.0h,
以85%的产率得到(2R,3S)-3-[tert-butyl(dimethyl)silyl]oxy-N-[(5R,6R,7R)-6-[tert-butyl(dimethyl)silyl]oxy-7-[(4S,9S,10R)-14,16-dimethoxy-9-methyl-2-oxo-10-tri(propan-2-yl)silyloxy-3-oxabicyclo[10.4.0]hexadeca-1(12),13,15-trien-6-yn-4-yl]-5-methyloct-2-ynyl]-2-methylhexanamide