3-[(2S,3R,5S,6R)-3-(tert-Butyl-dimethyl-silanyloxy)-5-methoxy-6-methoxymethyl-2-methyl-tetrahydro-pyran-2-yl]-propionaldehyde 、
甲氧羰基亚甲基三苯基正膦 以
甲苯 为溶剂,
以94%的产率得到(E)-5-[(2S,3R,5S,6R)-3-(tert-Butyl-dimethyl-silanyloxy)-5-methoxy-6-methoxymethyl-2-methyl-tetrahydro-pyran-2-yl]-pent-2-enoic acid methyl ester