benzyl (2R,4aR,7S,8S,8aR)-8-[tert-butyl(dimethyl)silyl]oxy-2-phenylspiro[4a,6,8,8a-tetrahydro-4H-[1,3]dioxino[5,4-b]pyridine-7,2'-oxirane]-5-carboxylate 在
lithium aluminium tetrahydride 作用下,
以
四氢呋喃 为溶剂,
反应 4.0h,
以21%的产率得到1,5-dideoxy-2-C-methyl-1,5-[{(phenylmethoxy) carbonyl}imino]-4,6-O-(R-phenylmethylene)-D-mannitol