tert-butyl N-[(2R,3R,6S)-6-(aminomethyl)-2-[(1R,2R,3S,4R,6S)-2-[(2S,3R,4S,5R)-4-[(2R,3R,4R,5S,6S)-4,5-dihydroxy-3-[(2-methylpropan-2-yl)oxycarbonylamino]-6-[[(2-methylpropan-2-yl)oxycarbonylamino]methyl]oxan-2-yl]oxy-3-hydroxy-5-(hydroxymethyl)oxolan-2-yl]oxy-3-hydroxy-4-[[(2S)-2-hydroxy-4-[(2-methylpropan-2-yl)oxycarbonylamino]butanoyl]amino]-6-[(2-methylpropan-2-yl)oxycarbonylamino]cyclohexyl]oxy-3,6-dihydro-2H-pyran-3-yl]carbamate 、
2-溴乙醇 在
potassium carbonate 、 sodium iodide 作用下,
以
丙酮 为溶剂,
反应 23.0h,
以35%的产率得到tert-butyl N-[(2R,3R,4R,5S,6S)-4,5-dihydroxy-2-[(2R,3S,4R,5S)-4-hydroxy-5-[(1R,2S,3R,5S,6R)-2-hydroxy-6-[[(2R,3R,6S)-6-[(2-hydroxyethylamino)methyl]-3-[(2-methylpropan-2-yl)oxycarbonylamino]-3,6-dihydro-2H-pyran-2-yl]oxy]-3-[[(2S)-2-hydroxy-4-[(2-methylpropan-2-yl)oxycarbonylamino]butanoyl]amino]-5-[(2-methylpropan-2-yl)oxycarbonylamino]cyclohexyl]oxy-2-(hydroxymethyl)oxolan-3-yl]oxy-6-[[(2-methylpropan-2-yl)oxycarbonylamino]methyl]oxan-3-yl]carbamate