172734-70-2Relevant articles and documents
Construction of Quaternary Carbon Center by Catalytic Asymmetric Alkylation of 3-Arylpiperidin-2-ones Under Phase-Transfer Conditions
Inukai, Tomoaki,Kano, Taichi,Maruoka, Keiji
, p. 2211 - 2214 (2020/01/08)
A highly enantioselective synthesis of δ-lactams having a chiral quaternary carbon center at the α-position has been developed through an asymmetric alkylation of 3-arylpiperidin-2-ones under phase-transfer conditions. In this transformation, a 2,2-diarylvinyl group on the δ-lactam nitrogen atom plays a crucial role as a novel protecting group and an achiral auxiliary for improving both yield and enantioselectivity of the reaction.
Azetidinylpropylpiperidine derivatives, intermediates and use as tachykinin antagonists
-
, (2008/06/13)
Compounds of the formula (I): where X1, A, Ar1, X and R are as defined in the specification, and pharmaceutically-acceptable salts thereof, are new, and are useful as tachykinin inhibitors which act at the NK1, NK2and NK3receptors or a combination of two or more thereof.