Iridium-Catalyzed Asymmetric Hydrogenation of β,γ-Unsaturated γ-Lactams: Scope and Mechanistic Studies
作者:Qianjia Yuan、Delong Liu、Wanbin Zhang
DOI:10.1021/acs.orglett.7b00171
日期:2017.3.3
asymmetric hydrogenation of β,γ-unsaturated γ-lactams using an iridium–phosphoramidite complex is reported. The chiral γ-lactams were obtained in excellent yields and enantioselectivities (up to 99% yield and 99% ee). The mechanistic studies indicated that the reduced products were obtained via the hydrogenation of the N-acyliminium cations, generated from β,γ-unsaturated γ-lactams, which was verified
据报道,使用铱-亚磷酰胺络合物可以有效地不对称地氢化β,γ-不饱和γ-内酰胺。以优异的产率和对映选择性(高达99%的产率和99%的ee)获得手性γ-内酰胺。机理研究表明,还原产物是通过氢化由β,γ-不饱和γ-内酰胺生成的N-酰基亚胺阳离子而获得的,该产物已通过1 H NMR分析证实。反应在0.1mol%的降低的催化剂负载下进行,并且还原的产物可以转化为两种潜在的生物活性化合物。提供了合成手性γ-内酰胺的新途径。
[EN] DIHYDROPYRIDAZINONES SUBSTITUTED WITH PHENYLUREAS<br/>[FR] DIHYDROPYRIDAZINONES SUBSTITUÉES PAR DES PHÉNYLURÉES
申请人:BAYER PHARMA AG
公开号:WO2018086703A1
公开(公告)日:2018-05-17
Compounds of formula (I) which are nicotinamide phosphoribosyltransferase (NAMPT) inhibitors and their use for the treatment of hyperproloferative diseases and/or disorders responsive to induction of cell death.
Preparation and use of aryl alkyl acid derivatives for the treatment of obesity
申请人:Bayer Pharmaceuticals Corporation
公开号:US20040224997A1
公开(公告)日:2004-11-11
This invention relates to certain aryl alkyl acid compounds, compositions, and methods for treating or preventing obesity and related diseases.
这项发明涉及某些芳基烷基酸化合物、组合物以及治疗或预防肥胖和相关疾病的方法。
NEW COMPOUNDS
申请人:Serrano-Wu Michael H.
公开号:US20090247534A1
公开(公告)日:2009-10-01
The present invention provides organic compounds of the following structure;
A-L1-B-C-D-L2-E
that are useful for treating or preventing conditions or disorders associated with DGAT1 activity in animals, particularly humans.