(E,2S,3R,4S,5R,6R,2'R)-6-[2'-tert-butyldimethylsilyloxy-3'-methoxypropyl]-4-hydroxy-2-methoxy-3,5-dimethyl-2-[1''-propenyl]-2,3,5,6-tetrahydro-4H-pyran 在
N-甲基吲哚酮 、 potassium dioxotetrahydroxoosmate(VI) 作用下,
以
四氢呋喃 、
水 、
叔丁醇 为溶剂,
以70%的产率得到(2R,3R,4S,5R,6R,2'R,1''R,2''S)-6-(2'-tert-butyldimethylsilyloxy-3'-methoxypropyl)-2-(1'',2''-dihydroxypropyl)-4-hydroxy-2-methoxy-3,5-dimethyl-2,3,5,6-tetrahydro-4H-pyran