申请人:Takeda Pharmaceutical Company Limited
公开号:EP2420507A1
公开(公告)日:2012-02-22
The present invention provides a novel ligand represented by the following formula and a novel transition metal complex having the ligand, which shows superior enantioselectivity and catalytic efficiency, particularly high catalyst activity, in various asymmetric synthesis reactions.
A transition metal complex having, as a ligand, a compound represented by the formula
wherein R4 is a hydrogen atom or a C1-6 alkyl group optionally having substituent(s), and R5 and R6 are each a C1-6 alkyl group optionally having substituent(s), or the formula
is a group represented by the formula
wherein ring B is a 3- to 8-membered ring optionally having substituent (s).
本发明提供了一种由下式表示的新型配体和一种具有该配体的新型过渡金属配合物,该配合物在各种不对称合成反应中显示出优异的对映选择性和催化效率,尤其是高催化剂活性。
一种过渡金属配合物,其配位体为如下式所代表的化合物
其中 R4 为氢原子或任选具有取代基的 C1-6 烷基,R5 和 R6 各为任选具有取代基的 C1-6 烷基,或式
是由式
其中环 B 是任选具有取代基的 3 至 8 元环。