O4-(
O4,
O6-(
R)-benzylidene-2-benzyloxycarbonylamino-α-
D-2-deoxy-glucopyranosyl)-
O5-[
O3-(
N6,
O4-(Ξ)-benzylidene-2,6-bis-benzyloxycarbonylamino-β-
L-2,6-dideoxy-idopyranosyl)-β-
D-ribofuranosyl]-
N,
N'-bis-benzyloxycarbonyl-1
D-2-deoxy-streptamine 在
sodium hydride 作用下,
以
异丁酰胺 为溶剂,
反应 4.0h,
以35%的产率得到benzyl (4aS,6R,7R,8R,8aS)-6-[(2R,3S,4R,5S)-5-[[(3aR,5S,6R,7S,7aS)-6-[[(4aR,6S,7R,8R,8aS)-8-hydroxy-2-phenyl-7-(phenylmethoxycarbonylamino)-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-6-yl]oxy]-2-oxo-5-(phenylmethoxycarbonylamino)-3a,4,5,6,7,7a-hexahydro-3H-1,3-benzoxazol-7-yl]oxy]-4-hydroxy-2-(hydroxymethyl)oxolan-3-yl]oxy-8-hydroxy-2-phenyl-7-(phenylmethoxycarbonylamino)-4,4a,6,7,8,8a-hexahydro-2H-pyrano[2,3-e][1,3]oxazine-3-carboxylate