(2R,3R,4S,5S,6R)-2-{3'-[(allyloxy)methyl]-5',6'-dihydro-1',4'-dithiin-2'-yl}-3,4,5-tri(benzyloxy)-6-[(benzyloxy)methyl]tetrahydro-2H-2-pyran 在
叔丁基锂 作用下,
以
正己烷 、
甲苯 为溶剂,
反应 4.0h,
以75%的产率得到(2R,3R,4S,5S,6R)-(3-{3,4,5-tri(benzyloxy)-6-[(benzyloxy)methyl]tetrahydro-2H-2-pyranyl}-5,6-dihydro-1,4-dithiin-2-yl)methanol