Synthesis of benzofurans from the cyclodehydration of α-phenoxy ketones mediated by Eaton’s reagent
作者:Zhanwei Ma、Min Zhou、Lin Ma、Min Zhang
DOI:10.1177/1747519820907244
日期:2020.7
acid) is used to prepare 3-substituted or 2,3-disubstituted benzofurans with moderate to excellent yields under mild conditions. The method provides a facile access to benzofurans from readily available starting materials such as phenols and α-bromo ketones. The reaction is highly efficient, which is attributed to the good reactivity and fluidity of Eaton’s reagent. The reaction can be applied to prepare
An asymmetrichydrosilylation of α-oxygenated ketones was developed under the catalysis of Co(OAc)2 in combination with a chiral phosphine-amido-oxazoline (PAO) ligand, providing a mild, efficient, and enantioselective access to a variety of synthetically useful 1,2-diol derivatives. This protocol can be carried out at the gram scale with a catalyst loading of 1 mol %, and its synthetic utility was
Biphenyl scaffold for the design of NMDA-receptor negative modulators: molecular modeling, synthesis, and biological activity
作者:Dmitry S. Karlov、Nadezhda S. Temnyakova、Dmitry A. Vasilenko、Oleg I. Barygin、Mikhail Y. Dron、Arseniy S. Zhigulin、Elena B. Averina、Yuri K. Grishin、Vladimir V. Grigoriev、Alexey V. Gabrel'yan、Viktor A. Aniol、Natalia V. Gulyaeva、Sergey V. Osipenko、Yury I. Kostyukevich、Vladimir A. Palyulin、Petr A. Popov、Maxim V. Fedorov
DOI:10.1039/d2md00001f
日期:——
NMDA (N-methyl-D-aspartate) receptor antagonists are promising tools for the treatment of a wide variety of central nervous system impairments including major depressive disorder. We present here the activity optimization process of a biphenyl-based NMDA negative allosteric modulator (NAM) guided by free energy calculations, which led to a 100 times activity improvement (IC50 = 50 nM) compared to a
requires the cleavage of a strong C–C bond. Herein, we introduce a cross-coupling method that effectively utilizes aromatic ketones as versatile aryl electrophiles. The cornerstone of our strategy is the transformation of aromatic ketones into aromatic esters via sequential Claisen and regioselective retro-Claisen condensations. The resulting esters are then capable of undergoing reactions with various nucleophiles