申请人:Hung Shang Cheng
公开号:US20090105466A1
公开(公告)日:2009-04-23
A method for preparing hexose derivatives comprises the steps of providing a silylated hexose, treating the silylated hexose with a first carbonyl compound in the presence of a catalyst to form an ketalized hexose, treating the ketalized hexose with a second carbonyl compound followed by treating with a first reductant to form an etherized hexose, and converting the etherized hexose into a target hexose derivative, which can be 2-alcohol hexose, 3-alcohol hexose, 4-alcohol hexose, or a 6-alcohol hexose. In particular, the present invention can prepare the hexose derivatives with highly regioselective scheme to protect individual hydroxyls of monosaccharide units and install an orthogonal protecting group pattern in a one-pot manner
制备己糖衍生物的方法包括以下步骤:提供硅烷基化的己糖,将硅烷基化的己糖与第一羰基化合物在催化剂存在下处理,形成缩酮化的己糖,将缩酮化的己糖与第二羰基化合物处理后,再用第一还原剂处理,形成醚化的己糖,并将醚化的己糖转化为目标己糖衍生物,可以是2-醇己糖、3-醇己糖、4-醇己糖或6-醇己糖。具体来说,本发明可以采用高度选择性的方案制备己糖衍生物,以保护单糖单元的各个羟基,并以一锅法安装正交保护基图案。