221148-26-1Relevant articles and documents
Enantioselective Fluorination of α-Branched β-Ynone Esters Using a Cinchona-Based Phase-Transfer Catalyst
Arimitsu, Satoru,Iwasa, Satsuki,Arakaki, Ryunosuke
supporting information, p. 12804 - 12812 (2020/10/09)
Herein, we report the fluorination of α-branched β-ynone esters to afford their corresponding quaternary fluorinated products with good enantioselectivity (ee = 73-90%) using a cinchona-based phase-transfer catalyst. α-Branched β-ynone esters possess a highly acidic α-proton and form their corresponding enolate as a single isomer, which allows the enantioselective fluorination reaction to occur under standard cinchona-based phase-transfer catalyst conditions. Moreover, the obtained α-fluorinated product can be treated with [(SPhos)AuNTf2] (1 mol %) to afford a fluorinated 3,5-diketo carboxylic acid.
FORMYLATED XANTHOCILLIN ANALOGUES AS NEUROPROTECTANTS
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Paragraph 0150; 0151; 0156; 0157; 0162; 0163; 0168; 0169, (2015/01/18)
The present invention relates to formylated xanthocillin analogues for use in the treatment of neurodegenerative diseases, to some of said analogues, as well as to methods for obtaining them and pharmaceutical composition comprising them. The invention al