3,4-二氢-2H-吡喃 、
<3aR-(3aα,4α,5β,6aα)>-Hexahydro-4-(hydroxymethyl)-5-hydroxy-1H-cyclopentafuran-1-on 在
4-甲基苯磺酸吡啶 作用下,
以
四氢呋喃 为溶剂,
以95%的产率得到(3aR,4S,5R,6aS)-5-(Tetrahydro-pyran-2-yloxy)-4-(tetrahydro-pyran-2-yloxymethyl)-hexahydro-cyclopenta[c]furan-1-one