New aminopropandiol derivatives as orally available and short-acting calcium-sensing receptor antagonists
摘要:
Synthesis and structure-activity relationship studies on a new aminopropandiol class of derivatives as calcium-sensing receptor antagonists are described. Modification of the phenolic moiety of a calcilytic compound NPS 2143 led to the identification of an orally available compound (R,R)-31 which demonstrated a rapid and transient stimulation of PTH release in rats. (C) 2010 Elsevier Ltd. All rights reserved.
Ruthenium-Catalyzed Direct Asymmetric Reductive Amination for the Synthesis of a Chiral Primary Amine Intermediate En Route to a PDE2A Inhibitor, TAK-915
ruthenium-catalyzed direct asymmetric reductive amination of an α-alkoxy ketone, a structural motif for which it is more challenging to implement such a transformation than 1,3-dicarbonyl compounds. The discovery of a novel rutheniumcatalyst that was highly stable to air and moisture, as well as being readily prepared from commercially available reagents, enabled rapid access to a key synthetic chiral primary amine