Free radical reactions initiated by organocobalt complexes. A new method for the degradation of carboxylic acids tofunctionalised nor-alkanes via acylcobalt salophen intermediates.
摘要 在三氟化硼醚化物存在下,用乙酸酐对5,11-二己基-6,12-二(杂)芳基取代的5,11-二氢吲哚并[3,2- b ]咔唑进行双乙酰化的有效方法是研制成功,因此以良好的产率提供了相应的2,8-二乙酰基衍生物。已经显示通过其他羧酸的酸酐反应发生类似的酰化反应。加热或在微波辐射下用二氧化硒氧化所得的2,8-二乙酰基衍生物,从而导致形成相应的2,8-二乙醛。后者被证明与芳族邻二胺反应生成新的吲哚[3,2- b在C-2和C-8处带有喹喔啉基片段的]咔唑。已测量了含喹喔啉的吲哚并[3,2- b ]咔唑的主要光学性能。 在三氟化硼醚化物存在下,用乙酸酐对5,11-二己基-6,12-二(杂)芳基取代的5,11-二氢吲哚并[3,2- b ]咔唑进行双乙酰化的有效方法是研制成功,因此以良好的产率提供了相应的2,8-二乙酰基衍生物。已经显示通过其他羧酸的酸酐反应发生类似的酰化反应。加热或在微波辐射下用二
Design and optimization of tricyclic gamma-secretase modulators
摘要:
Beginning with a diaminotriazine screening hit, several series of novel, tricyclic gamma-secretase modulators (GSMs) were designed. The SAR of several related series of GSMs is presented, and the in vivo profile of a lead molecule from the series is described. (C) 2016 Published by Elsevier Ltd.
Asymmetric Isothiourea-Catalysed Formal [3+2] Cycloadditions of Ammonium Enolates with Oxaziridines
作者:Siobhan R. Smith、Charlene Fallan、James E. Taylor、Ross McLennan、David S. B. Daniels、Louis C. Morrill、Alexandra M. Z. Slawin、Andrew D. Smith
DOI:10.1002/chem.201501271
日期:2015.7.13
A highly enantioselective Lewis base‐catalysed formal [3+2] cycloaddition of ammonium enolates and oxaziridines to give stereodefined oxazolidin‐4‐ones in high yield is described. Employing an enantioenriched oxaziridine in this process leads to a matched/mis‐matched effect with the isothiourea catalyst and allowed the synthesis of either syn‐ or anti‐stereodefined oxazolidin‐4‐ones in high d.r., yield
FLUORENE-TYPE COMPOUND, PHOTOPOLYMERIZATION INITIATOR COMPRISING SAID FLUORENE-TYPE COMPOUND, AND PHOTOSENSITIVE COMPOSITION CONTAINING SAID PHOTOPOLYMERIZATION INITIATOR
申请人:Daito Chemix Corporation
公开号:US20150259321A1
公开(公告)日:2015-09-17
According to an embodiment of the present invention, there is provided a novel fluorene-based compound and a photopolymerization initiator using the fluorene-based compound. The fluorene-based compound according to an embodiment of the present invention is represented by the general formula (1). A photopolymerization initiator having additionally high sensitivity can be provided by using the fluorene-based compound. In addition, a photopolymerization initiator that can impart additionally excellent characteristics can be provided by appropriately selecting, for example, a substituent.
Sustainable, three-component, one-pot procedure to obtain active anti-flavivirus agents
作者:Tommaso Felicetti、Maria Sole Burali、Chin Piaw Gwee、Kitti Wing Ki Chan、Sylvie Alonso、Serena Massari、Stefano Sabatini、Oriana Tabarrini、Maria Letizia Barreca、Violetta Cecchetti、Subhash G. Vasudevan、Giuseppe Manfroni
DOI:10.1016/j.ejmech.2020.112992
日期:2021.1
number of purification steps, the use of hazardous reagents and environmentally unsustainable generation of waste. Considering the promising antiviral activity of PBTZ analogues which require further exploration, in this work, we report the development of a new and sustainable three-component reaction (3CR) that can be combined with a basic hydrolysis in a one-pot procedure to obtain the PBTZ scaffold
[EN] BENZYL-SUBSTITUTED TETRACYCLIC HETEROCYCLIC COMPOUNDS AS PDE5 INHIBITORS<br/>[FR] COMPOSÉS HÉTÉROCYCLIQUES TÉTRACYCLIQUES À SUBSTITUTION BENZYLE COMME INHIBITEURS DE PDE5
申请人:NYCOMED GMBH
公开号:WO2010015589A1
公开(公告)日:2010-02-11
The present invention pertains to Benzyl-substituted tetracyclic heterocyclic compounds, as well as the resulting pharmaceutical compositions, and their use in the treatment or prophylaxis of diseases alleviated by inhibition of type 5 phosphodiesterases. Furthermore, the present invention pertains to the methods of manufacturing these Benzyl-substituted tetracyclic heterocyclic compounds.
The first chemoselective tandem acylation of the Blaise reaction intermediate: a novel method for the synthesis of α-acyl-β-enamino esters, key intermediate for pyrazoles
作者:Yu Sung Chun、Ki Kon Lee、Young Ok Ko、Hyunik Shin、Sang-gi Lee
DOI:10.1039/b813369g
日期:——
The Blaise reaction intermediate, a zinc bromide complex of β-enamino ester, could be activated in situ by addition of a stoichiometric or catalytic amount of n-BuLi to allow chemoselective tandem C2-acylation providing α-acyl-β-enamino esters, which are valuable intermediates for the syntheses of tri- and tetrasubstituted pyrazoles.