叔丁基二甲硅基三氟甲磺酸酯 、
4',6'-O-benzylidene-penta-N-benzyloxycarbonyl-paromomycin 在
2,4,6-三甲基吡啶 作用下,
以
二氯甲烷 、
甲苯 为溶剂,
反应 24.0h,
以75%的产率得到benzyl N-[(4aR,6S,7R,8R,8aS)-6-[(1R,2R,3S,4R,6S)-2-[(2S,3R,4S,5R)-5-[[tert-butyl(dimethyl)silyl]oxymethyl]-4-[(2R,3R,4R,5S,6S)-4,5-dihydroxy-3-(phenylmethoxycarbonylamino)-6-(phenylmethoxycarbonylaminomethyl)oxan-2-yl]oxy-3-hydroxyoxolan-2-yl]oxy-3-hydroxy-4,6-bis(phenylmethoxycarbonylamino)cyclohexyl]oxy-8-hydroxy-2-phenyl-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-7-yl]carbamate