申请人:Takeda Pharmaceutical Company Limited
公开号:US20140171655A1
公开(公告)日:2014-06-19
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 R
4
is a hydrogen atom or a C
1-6
alkyl group optionally having substituent(s), and R
5
and R
6
are each a C
1-6
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).
本发明提供了一种新型配体,其表示为以下公式,并提供了一种具有该配体的新型过渡金属配合物,在各种不对称合成反应中表现出优异的对映选择性和催化效率,特别是高催化活性。该过渡金属配合物具有以下配体:其中R4是氢原子或具有取代基的C1-6烷基,R5和R6分别是具有取代基的C1-6烷基,或者公式中的环B是具有取代基的3-8元环。