tert-butyl (2S)-4-[[(2R,3R,4R,5S,6R)-5-[(2R,3R,4R,5S,6R)-3,4-dihydroxy-6-(hydroxymethyl)-5-[(2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]oxy-3,4-dihydroxy-6-(hydroxymethyl)oxan-2-yl]amino]-2-[[2-(9H-fluoren-9-ylmethoxycarbonylamino)acetyl]amino]-4-oxobutanoate 在
哌啶 作用下,
以
N-甲基吡咯烷酮 为溶剂,
反应 3.5h,
生成 tert-butyl (2S)-4-[[(2R,3R,4R,5S,6R)-5-[(2R,3R,4R,5S,6R)-3,4-dihydroxy-6-(hydroxymethyl)-5-[(2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]oxy-3,4-dihydroxy-6-(hydroxymethyl)oxan-2-yl]amino]-2-[[2-[[2-(9H-fluoren-9-ylmethoxycarbonylamino)acetyl]amino]acetyl]amino]-4-oxobutanoate