An efficient, straightforward and general method for the de novo synthesis of highlyfunctionalized 4-fluoropyridines was developed via a cooperative copper- and base-catalyzed [3+3] cycloaddition of active methylene isocyanides with difluorocyclopropenes. The resulting 4-fluoropyridines can be readily diversified by various nucleophiles.
Synthesis of 2,5-Bis(hetero)aryl 4′-Substituted 4,5′-Bisoxazoles via Copper(I)-Catalyzed Domino Reactions of Activated Methylene Isocyanides with 2-Phenyl- and 2-(2-Thienyl)-4-[(aryl/heteroaryl)(methylthio)methylene]oxazol-5(4<i>H</i>)-ones
作者:Somaraju Yugandar、Anand Acharya、Hiriyakkanavar Ila
DOI:10.1021/jo400317g
日期:2013.4.19
An efficient straightforward synthesis of 2,5,4′-trisubstituted 4,5′-bisoxazoles via copper(I)-catalyzed domino reactions of 2-phenyl- and 2-(2-thienyl)-4-[(aryl/heteroaryl)methylene]-5-oxazolones with activatedmethylene isocyanides has been reported. The overall domino process comprised of formation of one C–C and two C–O bonds involves initial nucleophilic ring opening of oxazolones by cupriomethylene
HETEROCYCLIC LOW-MOLECULAR SAPP MIMETICS, A PHARMACEUTICAL COMPOSITION AND METHODS FOR PRODUCING AND USING SAME
申请人:Nenaydenov Valentin G.
公开号:US20220135547A1
公开(公告)日:2022-05-05
The invention relates to a novel class of non-peptide heterocyclic low-molecular peptide mimetics of secretory amyloid precursor protein (sAPP mimetics) capable of acting effectively upon the processes of the formation, storage and regeneration of normal and pathological memory. The compounds can also be used for studying (in vitro and in vivo) biochemical signaling, neurotrophic and neuroprotective processes related to the secretory protein sAPP and for studying the mechanisms of the formation, storage and regeneration of memory.
Design and Characterization of Novel Small Molecule Activators of Excitatory Amino Acid Transporter 2
作者:Sanjay Das、Artem V. Trubnikov、Anton M. Novoselov、Alexander V. Kurkin、Joris Beld、Andrea Altieri、Sandhya Kortagere
DOI:10.1021/acsmedchemlett.2c00304
日期:2022.10.13
Excitotoxicity in the brain is a causal factor in several neurological and neurodegenerative disorders. Excitatoryaminoacid transporter 2 (EAAT2), an astrocytic glutamate transporter involved in the clearance of >80% of synaptic glutamate, is considered a therapeutically relevant target for excitotoxicity. We have previously designed GT951, an activator of EAAT2 with nanomolar efficacy but limited
A series of isoindolinone compounds have been developed showing good in vitro potency on the Kv1.5 ion channel. By modification of two side chains on the isoindolinone scaffold, metabolically stable compounds with good in vivo PK profile could be obtained leaving the core structure unsubstituted. In this way, low microsomal intrinsic clearance (CLint) could be achieved despite a relatively high logD. The compounds were synthesized using the Ugi reaction, in some cases followed by Suzuki and Diels-Alder reactions, giving a diverse set of compounds in a small number of reaction steps. (C) 2016 Elsevier Ltd. All rights reserved.