Pharmaceutically active piperidine derivatives, in particular as modulators of chemokine receptor activity
申请人:——
公开号:US20040006081A1
公开(公告)日:2004-01-08
Compounds of formula (I), compositions comprising them, processes for preparing them and their use in medical therapy (for example modulating CCR5 receptor activity in a warm blooded animal).
Asymmetric Synthesis of C2-Quaternary Indolin-3-ones Enabled by N-Heterocyclic Carbene Catalysis
作者:Shuaishuai Fang、Shiyi Jin、Rui Ma、Tao Lu、Ding Du
DOI:10.1021/acs.orglett.9b01823
日期:2019.7.5
(NHC)-catalyzed formal [4 + 2] annulation of 2-aryl-3H-indol-3-ones with α,β-unsaturated carboxylicacids bearing γ-H was developed via an in situactivationstrategy. The reaction involves the γ-addition of vinyl enolates to the unique cyclic ketimines to afford chiral tricyclic indolin-3-ones with a quaternary carbon center at 2-position. This protocol provides a rapid and enantioselective pathway to