研究了由Na 2 S 2 O 4引发的含氟卤化物向4-戊烯酰胺的自由基加成反应。聚氟代烷基碘和碘代二氟乙酸乙酯均产生含氟的γ-丁内酯作为主要产物,而溴代二氟乙酸乙酯等溴化物则产生加成-还原产物。在使用各种底物研究了空间和立体反应对反应收率的影响之后,得出的结论是,4-戊烯酰胺与多氟烷基碘的反应提供了一种制备具有氟化侧链的γ-丁内酯的替代方法。
研究了由Na 2 S 2 O 4引发的含氟卤化物向4-戊烯酰胺的自由基加成反应。聚氟代烷基碘和碘代二氟乙酸乙酯均产生含氟的γ-丁内酯作为主要产物,而溴代二氟乙酸乙酯等溴化物则产生加成-还原产物。在使用各种底物研究了空间和立体反应对反应收率的影响之后,得出的结论是,4-戊烯酰胺与多氟烷基碘的反应提供了一种制备具有氟化侧链的γ-丁内酯的替代方法。
[EN] FUSED PIPERIDINES AS IP RECEPTOR AGONISTS FOR THE TREATMENT OF PULMONARY ARTERIAL HYPERTENSION (PAH) AND RELATED DISORDERS<br/>[FR] PIPÉRIDINES CONDENSÉES UTILISÉES COMME AGONISTES DU RÉCEPTEUR IP POUR LE TRAITEMENT DE L'HYPERTENSION ARTÉRIELLE PULMONAIRE (HTAP) ET DE TROUBLES ASSOCIÉS
申请人:NOVARTIS AG
公开号:WO2013105063A1
公开(公告)日:2013-07-18
The present invention provides heterocyclic derivatives which activate the IP receptor, processes for preparing them, pharmaceutical compositions comprising said derivatives and uses thereof. Activating the IP receptor signaling pathway is useful to treat many forms of PAH, pulmonary fibrosis and exert beneficial effects in fibrotic conditions of various organs in animal models and in patients. Formula (I):
investigated. Both polyfluoroalkyliodide and ethyl iododifluoroacetate, gave rise to fluorine-containing γ-butyrolactones as the main products while bromides such as ethyl bromodifluoroacetate gave the addition–reduction product. After steric and stereo effects on reaction yields were studied using various substrates, it was concluded that the reactions of 4-pentenamides and polyfluoroalkyliodides provide one
研究了由Na 2 S 2 O 4引发的含氟卤化物向4-戊烯酰胺的自由基加成反应。聚氟代烷基碘和碘代二氟乙酸乙酯均产生含氟的γ-丁内酯作为主要产物,而溴代二氟乙酸乙酯等溴化物则产生加成-还原产物。在使用各种底物研究了空间和立体反应对反应收率的影响之后,得出的结论是,4-戊烯酰胺与多氟烷基碘的反应提供了一种制备具有氟化侧链的γ-丁内酯的替代方法。