Synthesis of a monofluoro 3-alkyl-2-hydroxy-1,4-naphthoquinone: a potential anti-malarial drug
摘要:
Monofluorinated 3-alkyl-2-hydroxy-1,4-naphthoquinone 4 was prepared in eight steps from commercially available 8-bromooctanoic acid (10). The key step involved L-proline-catalyzed three-component reductive alkylation (TCRA) of 2-hydroxy-1,4-naphthoquinone (5) with the optically active aldehyde 7. (C) 2015 Elsevier Ltd. All rights reserved.
Evidence for an octanoate synthase operating during the biosynthesis of piliformic acid in Poronia piliformis
摘要:
Sodium [1-C-13]-octanoate is incorporated intact into the C-8 unit of piliformic acid 1 in Poronia piliformis whereas sodium [3-C-13]-decanoate 2 is incorporated into this unit only after prior beta-oxidation to [1-C-13]-acetyl-CoA. Also 8-fluoraoctanaote 3 is utilised by P. piliformis as an intact unit to generate 9-fluoropiliformic acid 5 whereas 10-fluorodecanoate 4 is not. These results suggest that octanoate is biosynthesised de novo for secondary metabolism and is not assimilated from higher fatty acids by beta-oxidation. (C) 1998 Elsevier Science Ltd. All rights reserved.
Methods of halogenating a carbon containing compound having an sp3 C—H bond are provided. Methods of fluorinating a carbon containing compound comprising halogenation with Cl or Br followed by nucleophilic substitution with F are provided. Methods of direct oxidative C—H fluorination of a carbon containing compound having an sp3 C—H bond are provided. The halogenated products of the methods are provided.
Asymmetric syntheses of potential anti-malarial drugs designed from Fieser's 2-hydroxy-3-(2-methyloctyl)naphthalene-1,4-dione
作者:Louise M. Fisher、Eliana E. Kim、Nicolai V. Moskalev、Gordon W. Gribble
DOI:10.24820/ark.5550190.p011.206
日期:——
Synthesis of a monofluoro 3-alkyl-2-hydroxy-1,4-naphthoquinone: a potential anti-malarial drug
作者:Eliana E. Kim、Evans O. Onyango、Liangfeng Fu、Gordon W. Gribble
DOI:10.1016/j.tetlet.2015.10.054
日期:2015.12
Monofluorinated 3-alkyl-2-hydroxy-1,4-naphthoquinone 4 was prepared in eight steps from commercially available 8-bromooctanoic acid (10). The key step involved L-proline-catalyzed three-component reductive alkylation (TCRA) of 2-hydroxy-1,4-naphthoquinone (5) with the optically active aldehyde 7. (C) 2015 Elsevier Ltd. All rights reserved.
Evidence for an octanoate synthase operating during the biosynthesis of piliformic acid in Poronia piliformis
Sodium [1-C-13]-octanoate is incorporated intact into the C-8 unit of piliformic acid 1 in Poronia piliformis whereas sodium [3-C-13]-decanoate 2 is incorporated into this unit only after prior beta-oxidation to [1-C-13]-acetyl-CoA. Also 8-fluoraoctanaote 3 is utilised by P. piliformis as an intact unit to generate 9-fluoropiliformic acid 5 whereas 10-fluorodecanoate 4 is not. These results suggest that octanoate is biosynthesised de novo for secondary metabolism and is not assimilated from higher fatty acids by beta-oxidation. (C) 1998 Elsevier Science Ltd. All rights reserved.