(1R)-(1,4:3,6-dianhydro-D-mannitol-2-yl)-1,4:3,6-dianhydro-D-fructose 、 1-amino-3-(4-(2-hydroxyethyl)phenoxy)propan-2-ol 在
对甲苯磺酸 作用下,
以
甲醇 为溶剂,
反应 20.0h,
以96.3%的产率得到(3R,3aR,6R,6aS)-6-[(2R,3'R,3'aR,5R,5'R,6'aS)-3'-hydroxy-5-[[4-(2-hydroxyethyl)phenoxy]methyl]spiro[1,3-oxazolidine-2,6'-3,3a,5,6a-tetrahydro-2H-furo[3,2-b]furan]-5'-yl]-3,3a,5,6a-tetrahydro-2H-furo[3,2-b]furan-3,6-diol