2,3,5,6-di-O-isopropylidene-D-mannofuranose 、 methyl phenylphosphinate 在
potassium tert-butylate 作用下,
以
四氢呋喃 为溶剂,
反应 17.0h,
以30%的产率得到(S
P,3R,4S,5R,6R,4'R)-3-hydroxy-4-(2.2-dimethyl[1.3]dioxolan-4-yl)-2.2-dimethyl-2-oxo-2-phenyltetrahydro-2λ
5-[1.2]oxaphosphinane