Compounds of the formula I:
or a pharmaceutical salt thereof,
wherein X, Ar
1
, R1, R
2
, R
3
, R
4
, R
5
, R
6
and R
7
are as defined herein. Also disclosed are methods of making the compounds and using the compounds for treatment of inflammatory diseases such as arthritis.
Ketoreductase (KRED)-catalyzed dynamic reductive kineticresolution (DYRKR) of α-substituted-β-keto arylphosphonates was developed as a generic and stereoselective approach to synthesize chiral α-substituted-β-hydroxy arylphosphonates, with moderate-to-excellent isolated yield (up to 96%), good-to-excellent diastereoselectivity (up to >99 : <1 dr), and excellent enantioselectivity (up to >99% ee) being
Stereoselective Synthesis of 4-Substituted Cyclic Sulfamidate-5-Phosphonates by Using Rh-Catalyzed, Asymmetric Transfer Hydrogenation with Accompanying Dynamic Kinetic Resolution
作者:Yeon Ji Seo、Jin-ah Kim、Hyeon-Kyu Lee
DOI:10.1021/acs.joc.5b01434
日期:2015.9.4
asymmetric transfer hydrogenation of 4-substituted cyclic sulfamidate imine-5-phosphonates produces the corresponding cyclic sulfamidate-5-phosphonates. The process employs a HCO2H/Et3N mixture as the hydrogen source and the chiral Rh catalysts, (R,R)- or (S,S)-Cp*RhCl(TsDPEN), and it takes place at room temperature within 1 h with high yields and high levels of stereoselectivity.
由动态动力学拆分驱动的4-取代的环状氨基磺酸亚胺-5-膦酸酯的不对称转移氢化反应生成了相应的环状氨基磺酸5-膦酸酯。该方法使用HCO 2 H / Et 3 N混合物作为氢源和手性Rh催化剂((R,R)-或(S,S)-Cp * RhCl(TsDPEN) 1 h具有高收率和高水平的立体选择性。
New pyridazines as 11B-HSD1 inhibitors
申请人:Amrein Kurt
公开号:US20070010519A1
公开(公告)日:2007-01-11
Compounds of formula
as well as pharmaceutically acceptable salts and esters thereof, wherein R
1
to R
4
have the significance given in claim
1
can be used in the form of pharmaceutical compositions.