Evaluation of synthetic naphthalene derivatives as novel chemical chaperones that mimic 4-phenylbutyric acid
摘要:
The chemical chaperone 4-phenylbutyric acid (4-PBA) has potential as an agent for the treatment of neurodegenerative diseases. However, the requirement of high concentrations warrants chemical optimization for clinical use. In this study, novel naphthalene derivatives with a greater chemical chaperone activity than 4-PBA were synthesized with analogy to the benzene ring. All novel compounds showed chemical chaperone activity, and 2 and 5 possessed high activity. In subsequent experiments, the protective effects of the compounds were examined in Parkinson's disease model cells, and low toxicity of 9 and 11 was related to amphiphilic substitution with naphthalene. (C) 2015 Elsevier Ltd. All rights reserved.
Nucleophilic attack of intramolecular hydroxyl groups on electron-rich aromatics using hypervalent iodine(III) oxidation
作者:Kayoko Hata、Hiromi Hamamoto、Yukiko Shiozaki、Simon B. Cämmerer、Yasuyuki Kita
DOI:10.1016/j.tet.2007.02.118
日期:2007.5
The hypervalent iodine(III) reagent, phenyliodine bis(trifluoroacetate) (PIFA)-mediated oxidative nucleophilic substitution of electron-rich aromatics involving aromatic cation radical intermediates was utilized in the direct aromatic carbon–oxygen bond formation reaction, and a novel and simple synthetic method for chroman derivatives was developed. As an extension of this methodology, a facile access
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作者:Edward C. Taylor、Juan G. Andrade、Gerhardus J. H. Rall、Ignatius J. Turchi、Kosta Steliou、G. Erik Jagdmann、Alexander McKillop