Rh<sub>2</sub>(II)-Catalyzed Ring Expansion of Cyclobutanol-Substituted Aryl Azides To Access Medium-Sized <i>N</i>-Heterocycles
作者:Wrickban Mazumdar、Navendu Jana、Bryant T. Thurman、Donald J. Wink、Tom G. Driver
DOI:10.1021/jacs.7b01833
日期:2017.4.12
A new reactivity pattern of Rh2(II)-N-arylnitrenes was discovered that facilitates the synthesis of medium-sized N-heterocycles from ortho-cyclobutanol-substituted aryl azides. The key ring-expansion step of the catalytic cycle is both chemoselective and stereospecific. Our mechanistic experiments implicate the formation of a rhodium N-arylnitrene catalytic intermediate and reveal that sp3 C-H bond
[4+3]-Cycloaddition Reaction of Sulfilimines with Cyclobutenones: Access to Benzazepinones
作者:Xiaozhou Xie、Jiangtao Sun
DOI:10.1021/acs.orglett.1c03413
日期:2021.11.19
A catalyst-free [4+3]-cycloadditionreaction of N-aryl sulfilimines with cyclobutenones is described, which provides a straightforward protocol for synthesizing 1,5-dihydro-2H-benzo[b]azepin-2-ones under mild reaction conditions. This reaction features a broad substrate scope and good functional group tolerance and does not require catalysts or additives. Moreover, using N-pyridinyl sulfilimine as
描述了N-芳基硫亚胺与环丁烯酮的无催化剂 [4+3] -环加成反应,为在温和反应下合成 1,5-二氢-2 H-苯并 [ b ]azepin-2-ones提供了一个简单的方案状况。该反应具有广泛的底物范围和良好的官能团耐受性,并且不需要催化剂或添加剂。此外,以N-吡啶基硫亚胺为底物,还制备了一系列吡啶并氮杂酮类化合物。
Novel lactams and uses thereof
申请人:Becker Christopher
公开号:US20060089346A1
公开(公告)日:2006-04-27
Compounds having the formula (1) pharmaceutical compositions containing them and their methods of use for the treatment of neurological disorders related to amyloid B protein production and neurological disorders such as Alzheimer's disease. These compounds inhibit γ secretase and thereby inhibit the production of amyloid β protein, thereby acting to prevent the formation of neurological deposits of amyloid protein.
Compounds having the formula (I) pharmaceutical compositions containing them and their methods of use for the treatment of neurological disorders related to amyloid β protein production and neurological disorders such as Alzheimer's disease. These compounds inhibit γ secretase and thereby inhibit the production of amyloid β protein, thereby acting to prevent the formation of neurological deposits of amyloid protein.
The invention provides a new method for treating disorders associated with activation of the Notch signal transduction pathway comprising administering an effective amount of a compound of Formula (I), in free form or in a pharmaceutically acceptable salt form or in the form of a pharmaceutically acceptable solvate of the compound or the salt, to a human or animal patient in need thereof.