N-<1-<4-(acetylamino)-2,3,8,9,10,11-hexa-O-acetyl-4-deoxy-7-O-(phenylmethyl)-D-glycero-D-galacto-β-D-gluco-undecopyranosyl>-1,2-dihydro-2-oxo-4-pyrimidinyl>acetamide 在
2,6-二叔丁基-4-甲基吡啶 、
三氟甲磺酸酐 、
3-azido-1,3-dideoxy-1-(phenylsulfinyl)-2,4,6-tri-O-(2,2-dimethylpropanoyl)-β-D-glucopyranose 作用下,
以
二氯甲烷 为溶剂,
反应 0.5h,
以100%的产率得到<4S-<4α(S
*),4aα,6β,7α,8β,8aβ>>-1-C-<6<4-(acetylamino)-2-oxo-1-(2H)-pyrimidinyl>-7,8-bis(acetyloxy)-4,4a,6,7,8,8a-hexahydro-2-methylpyrano<3,2-d><1,3>oxazin-4-yl>-1-O-(phenylmethyl)-2,3,4,5-tetra-O-acetyl-D-arabinitol