The homogeneous asymmetrichydrogenation reactions of fluorinated β-keto esters using ruthenium(II) complexes bearing atropoisomeric diphosphines such as BINAP and MeOBIPHEP have yielded the corresponding β-hydroxy esters in quantitative yield with ee that ranged between 42 and >95%.
QUINOBENZOXAZINE ANALOGS AND METHODS OF USING THEREOF
申请人:Whitten Jeffrey P.
公开号:US20090215761A1
公开(公告)日:2009-08-27
The present invention relates to quinobenzoxazines analogs having the general formula:
and pharmaceutically acceptable salts, esters and prodrugs thereof;
wherein A, U, W, X, Z, B, L, R
1
, R
3
, R
4
and R
5
are substituents.
The present invention also relates to methods for using such compounds.