methyl 4,6-O-benzylidene-2,3-O-bis(t-butyl-oxycarbonylmethyl)-α-D-galactopyranoside 在
lithium aluminium tetrahydride 作用下,
以
四氢呋喃 为溶剂,
以85%的产率得到2-[(4aR,6S,7R,8S,8aS)-7-(2-Hydroxy-ethoxy)-6-methoxy-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-8-yloxy]-ethanol