(1S,2R,5R,6R,9R,10R,11R,12R,13R,15S)-12-(2-iodoethoxy)-6,10-dimethyl-5-[(2R)-6-methyl-6-triethylsilyloxyheptan-2-yl]-18-phenyl-11,13-bis(triethylsilyloxy)-16,18,20-triazahexacyclo[13.5.2.01,9.02,6.010,15.016,20]docos-21-ene-17,19-dione 在
氰化钠 作用下,
以
四氢呋喃 、 dimethyl sulfoxide 为溶剂,
反应 3.5h,
以87%的产率得到3-[[(1S,2R,5R,6R,9R,10R,11R,12R,13R,15S)-6,10-dimethyl-5-[(2R)-6-methyl-6-triethylsilyloxyheptan-2-yl]-17,19-dioxo-18-phenyl-11,13-bis(triethylsilyloxy)-16,18,20-triazahexacyclo[13.5.2.01,9.02,6.010,15.016,20]docos-21-en-12-yl]oxy]propanenitrile