Unprecedented Hydrophobic Amplification in Noncovalent Organocatalysis “on Water”: Hydrophobic Chiral Squaramide Catalyzed Michael Addition of Malonates to Nitroalkenes
作者:Han Yong Bae、Choong Eui Song
DOI:10.1021/acscatal.5b00685
日期:2015.6.5
In this study, water was demonstrated to be an exceptionally efficient reaction medium for the noncovalent, hydrogen-bonding-promoted enantioselective Michaeladdition of malonates to diverse nitroolefins using cinchona-based squaramide catalysts. A significant increase in the reaction rate was observed when the reaction was performed “on water” rather than in the conventional organic solvents, because
All in one: A one‐pot synthesis of the dipeptidylpeptidase IV selective inhibitor ABT‐341 (see structure) by using an “uninterrupted sequence of reactions” has been developed. This strategy broadens the spectrum of one‐pot reactions and is poised to speed up the synthesis of medicinally relevant drug compounds.
Pharmaceutical compositions as inhibitors of dipeptidyl peptidase-IV (DPP-IV)
申请人:Pei Zhonghua
公开号:US20070049596A1
公开(公告)日:2007-03-01
The present invention relates to compounds, which inhibit dipeptidyl peptidase IV (DPP-IV) and are useful for the prevention or treatment of diabetes, especially type II, as well as hyperglycemia, metabolic syndrome, hyperinsulinemia, obesity, atherosclerosis, various immunomodulatory diseases, and other diseases.