Synthesis of Benzo-fused Heterocycles by Intramolecular α-Arylation of Ketone Enolate Anions
作者:Javier F. Guastavino、Roberto A. Rossi
DOI:10.1021/jo202012n
日期:2012.1.6
benzo-fused heterocycles in good to excellent yields is reported. The synthetic strategy involves the generation of a new intramolecular α-aryl ketone bond by the photostimulated SRN1 reaction of ketone enolate anions linked to a pendant haloarene as the key step. On the other hand, an intramolecular CAr–CAr coupling led to the formation of five- and six-member benzo-fused heterocycles (9H-carbazole
据报道,六元,七元,八元和九元苯并稠合的杂环可以两步合成,产率高到极好。合成策略涉及通过与末端卤代芳烃连接的酮烯酸酯阴离子的光刺激S RN 1反应生成新的分子内α-芳基酮键。另一方面,当竞争性形成芳香酰胺阴离子时,分子内C Ar –C Ar偶联导致五元和六元苯并稠合杂环(9 H-咔唑和菲啶)的形成。
Compounds with Atypical Antipsychotic Activity
申请人:Minetti Patrizia
公开号:US20080293689A1
公开(公告)日:2008-11-27
Formula (I) compounds with atypical antipsychotic activity
where the meanings of the various groups are as described here below, are endowed with activity characteristic of atypical antipsychotic agents, and therefore are useful as medicaments, particularly for the treatment of schizophrenia, paranoid states, manic-depressive states, affective disorders, social regression, personality regression and hallucinations.
Using rational drug design to develop atypical antipsychotic drug candidates, we generated novel and metabolically stable pyrrolobenzazepines with an optimized pK(i) 5-HT(2A)/D(2) ratio. 5a, obtained by a new palladium-catalyzed three-step synthesis, was selected for further pharmacological and biochemical investigations and showed atypical antipsychotic properties in vivo. 5a was active on conditioned