3-O-benzyl-6-C-<(E)-6-O-benzyl-7-deoxy-1,2:3,4-di-O-isopropylidene-D-glycero-α-D-galacto-heptopyranos-7-ylidene>-6-deoxy-1,2-O-isopropyledene-α-D-glucofuranose 在
jones reagent 作用下,
以
丙酮 为溶剂,
以77.5%的产率得到(E)-(S)-4-Benzyloxy-1-((3aR,6R,6aR)-6-benzyloxy-2,2-dimethyl-tetrahydro-furo[2,3-d][1,3]dioxol-5-yl)-4-((3aR,5R,5aS,8aS,8bR)-2,2,7,7-tetramethyl-tetrahydro-bis[1,3]dioxolo[4,5-b;4',5'-d]pyran-5-yl)-but-2-en-1-one