(3S)-3-hydroxyquinidine, the major biotransformation product of quinidine. Synthesis and conformational studies. X-Ray molecular structure of (3S)-3-hydroxyquinidine methanesuiphonate
synthetic equivalents of a variety of α‐carboxylate anions. Phase‐transfer catalysis (PTC) enabled their mild deprotonation and catalytic asymmetric addition to highly reactive imines generated in situ from α‐amidosulfones (see scheme; Pg=protecting group). The synthetic utility of the products was demonstrated by their straightforward transformation into a range of β‐amino acid derivatives.
Optically active isomers of quinine and quinidine and their respective biological action
申请人:——
公开号:US20030212098A1
公开(公告)日:2003-11-13
The present invention provides methods for purifying, identifying and using optically active isomers of quinine and quinidine as well as compositions comprising such optically active isomers. Such optically active isomers having desired actions on cardiac sodium and potassium channel function substantially separable from undesirable effects on GI motility can be useful for more effective therapy of cardiac arrhythmias. Also disclosed are methods for assaying the levels of such isomers present in the biological fluids.