Development of Highly Regioselective Amidyl Radical Cyclization Based on Lone Pair−Lone Pair Repulsion
作者:Xinting Yuan、Kun Liu、Chaozhong Li
DOI:10.1021/jo800845b
日期:2008.8.1
The substituent effect on the reactivity and regioselectivity of N-(4-pentenyl)amidyl radicalcyclization was investigated. Exclusive 6-endo cyclization was observed for N-(4-pentenyl)amidyl radicals with internal vinylic heteroatom substitution (Cl, Br, I, OMe, SEt). The substituent on the carbonyl group also showed a significant influence on the reactivity of amidyl radicals, which increases in the
The present invention relates to compounds of the formula (I), wherein Ar
1
and Ar
2
are as described in the description and to their use as pharmaceuticals for the treatment of sundown syndrome. The invention also relates to the preparation of such compounds and of pharmaceutically acceptable salts thereof.
OREXIN RECEPTOR ANTAGONISTS WHICH ARE [ORTHO BI-(HETERO-)ARYL]-[2-(META BI-(HETERO-)ARYL)-PYRROLIDIN-1-YL]-METHANONE DERIVATIVES
申请人:ACTELION PHARMACEUTICALS LTD
公开号:US20150252032A1
公开(公告)日:2015-09-10
The present invention relates to [ortho bi-(hetero-)aryl]-[2-(meta bi-(hetero-)aryl)-pyrrolidin-1-yl]-methanone derivatives of formula (I)
wherein R, and the rings A
1
A
2
and A
3
are as described in the description, to pharmaceutically acceptable salts thereof, to their preparation, to pharmaceutical compositions containing one or more compounds of formula (I), and to their use as pharmaceuticals, especially to their use as orexin receptor antagonists.
[EN] QUINOLINE-BASED DERIVATIVES AS VAP-1 INHIBITORS<br/>[FR] DÉRIVÉS À BASE DE QUINOLÉINE UTILISÉS COMME INHIBITEURS DE VAP-1<br/>[ZH] 作为VAP-1抑制剂的喹啉类衍生物