annulation with glutaconate to provide straightforward access to phenanthridine‐8‐carboxylates and hydrophenanthridine‐8‐carboxylates under mild aerobic conditions. In this domino transformation, two rings and three bonds were successively created. A mechanism involving tandem [3+3]‐annulation/intramolecularcyclization/ demethoxycarbonylation/aerobic oxidative aromatization sequence was proposed.
Synthesis of 2-(1<i>H</i>-Indol-2-yl)acetamides via Brønsted Acid-Assisted Cyclization Cascade
作者:Nicolai A. Aksenov、Dmitrii A. Aksenov、Anton A. Skomorokhov、Lidiya A. Prityko、Alexander V. Aksenov、Georgii D. Griaznov、Michael Rubin
DOI:10.1021/acs.joc.0c01344
日期:2020.10.2
efficient and straightforward Brønsted-acid mediated cascade process was developed, involving cyclization of readily available β-ketonitriles into 2-aminofurans, and their subsequent recyclization into 2-(1H-indol-2-yl)acetamides is developed. This synthetic route opens a new avenue for an expeditious assembly of various isotryptamine derivatives for medicinal chemistry.
Synthesis and biological evaluation of 2′-Aminochalcone: A multi-target approach to find drug candidates to treat Alzheimer’s disease
作者:Renata P. Sakata、Giorgio Antoniolli、Marcelo Lancellotti、Daniel Fabio Kawano、Euzébio Guimarães Barbosa、Wanda P. Almeida
DOI:10.1016/j.bioorg.2020.104201
日期:2020.10
Alzheimer’s disease (AD) is a neurodegenerative process that compromises cognitive functions. The physiopathology of AD is multifactorial and is mainly supported by the cholinergic and amyloid hypotheses, which allows the identification the fundamental role of some markers, such as the enzymes acetylcholinesterase (AChE) and β-secretase (BACE-1), and the β-amyloid peptide (Aβ). In this work, we prepared
Acryloylphenylcarboxamides: A New Class of Breast Cancer Resistance Protein (ABCG2) Modulators
作者:Stefanie Kraege、Sebastian C. Köhler、Michael Wiese
DOI:10.1002/cmdc.201600341
日期:2016.11.7
easily synthesized natural precursors of secondary plant metabolites, and their derivatives show various biological activities including inhibition of ABC transporters. Especially, their role as inhibitors of ABCG2, the most recently discovered ABC transporter involved in multidrug resistance, inspired the synthesis of new structurally diverse derivatives. Therefore, we combined the typical chalcone moiety