Diastereoselective Intramolecular Cyanoamidation with Alkenes
作者:Ashley M. Dreis、Sadie C. Otte、Matthew S. Eastwood、Elizabeth R. Alonzi、Jason T. Brethorst、Christopher J. Douglas
DOI:10.1002/ejoc.201601283
日期:2017.1.3
Reported herein is a diastereoselective intramolecularalkene cyanoamidation, wherein high d.r. values are imparted by chiral directing groups. Lactams with an α-all-carbon quaternary stereocenter are readily synthesized, which may enable access to structures frequently found in biologically active molecules and natural products.
本文报道了非对映选择性分子内烯烃氰基酰胺化,其中手性导向基团赋予高 dr 值。具有α-全碳四元立体中心的内酰胺很容易合成,这可能使我们能够获得在生物活性分子和天然产物中常见的结构。
[EN] CANNABINOID RECEPTOR MODULATORS<br/>[FR] MODULATEURS DES RÉCEPTEURS DES CANNABINOÏDES
申请人:ARENA PHARM INC
公开号:WO2012116279A1
公开(公告)日:2012-08-30
Provided are certain methods useful in the treatment of pain comprising administering a compound of Formula Ia and pharmaceutical compositions thereof that modulate the activity of the cannabinoid CB2 receptor.
Structural optimization of cyclic sulfonamide based novel HIV-1 protease inhibitors to picomolar affinities guided by X-ray crystallographic analysis
作者:Ashit K. Ganguly、Sesha S. Alluri、Chih-Hung Wang、Alyssa Antropow、Alex White、Danielle Caroccia、Dipshikha Biswas、Eunhee Kang、Li-Kang Zhang、Steven S. Carroll、Christine Burlein、John Fay、Peter Orth、Corey Strickland
DOI:10.1016/j.tet.2014.03.038
日期:2014.5
disclose the design of novelinhibitors 47 and 48 based on the X-ray structure of compound 5 bound to the HIV-1protease, their synthesis and activity against HIV-1protease. By making changes at the C4 position and the carbamate linkage the above compounds 47 and 48 were found to be approximately one hundred fold more active compared to 5 and their Ki values are in the picomolar range. An unusual observation
Starting from diverse alkene-tethered aryl iodides and O-benzoyl-hydroxylamines, the enantioselective reductive cross-electrophilic 1,2-carboamination of unactivatedalkenes was achieved using a chiral pyrox/nickel complex as the catalyst. This mild, modular, and practical protocol provides rapid access to a variety of β-chiral amines with an enantioenriched aryl-substituted quaternary carbon center
nucleophiles, the reaction goes through a C-5-endo-dig carbocyclization to give the indene products; whereas, O-7-endo-dig cyclization occurs dominantly when indoles/pyrroles are used as the nucleophiles, delivering the 7-membered benzo[d]oxepines. In comparison with the well-documented cycloaddition and nucleophilic addition reactions, this cascade reaction features a novel reaction pattern for the
已经开发了空前的金催化的烯酮C = O / C = C双官能化方法。机理研究和密度泛函理论(DFT)计算表明,该反应是由金催化的重氮酮的Wolff重排反应形成烯酮中间体,然后进行分子间亲核加成反应,并通过烯醇中间体以两个不同的环化过程终止。在以醇为亲核试剂的情况下,反应通过C-5-endo-dig碳环化反应得到茚产物;然而,当吲哚/吡咯用作亲核试剂时,O -7-内切环化反应主要发生,从而提供7元苯并[ d]]奥西平。与有据可查的环加成反应和亲核加成反应相比,该级联反应的特征在于通过依次添加亲核试剂和亲电试剂,乙烯酮双官能化的新型反应模式。