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Ouerghui A, Dardouri M, Sleimi N, Amor ABH, Ammari F, Girard C. Synthesis of new polymers containing 1,2,3-triazole units from poly(vinylchloride) via "click” chemistry catalyzed by copper iodide and its application in extraction of nitrates and metals contained in wastewater. POLIMERY-W 2019. [DOI: 10.14314/polimery.2019.1.1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Abstract
The first steps of oseltamivir synthesis from quinic acid involve acetalization and ester formation. These reactions are catalyzed by either acids or bases, which may be accomplished by heterogeneous catalysts. Sulfonic solids are efficient acid catalysts for acetalization and esterification reactions. Supported tetraalkylammonium hydroxide or 1,5,7-triazabicyclo[4.4.0]dec-5-ene are also efficient base catalysts for lactone alcoholysis and in this work, these catalysts have been applied in two alternative synthetic routes that lead to oseltamivir. The classical route consists of an acetalization, followed by a lactonization, and then a lactone alcoholysis. This achieves a 66% isolated yield. The alternative route consists of esterification followed by acetalization and is only efficient when an acetone acetal is used.
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Rezende CO, Oliveira LA, Oliveira BA, Almeida CG, Ferreira BS, Le Hyaric M, Carvalho GSL, Lourenço MCS, Batista M, Marchini FK, Silva VL, Diniz CG, Almeida MV. Synthesis and Antibacterial Activity of Alkylated Diamines and Amphiphilic Amides of Quinic Acid Derivatives. Chem Biol Drug Des 2015; 86:344-50. [PMID: 25528858 DOI: 10.1111/cbdd.12498] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Revised: 12/08/2014] [Accepted: 12/12/2014] [Indexed: 11/29/2022]
Abstract
Different series of N-alkylated diamines and their derivatives condensed to quinic acid were synthesized and tested for antibacterial properties against Staphylococcus aureus, Staphylococcus epidermidis, Pseudomonas aeruginosa, and Mycobacterium tuberculosis. The lipophilic chain and carbohydrate moiety modulate the antibacterial activity and the compounds showed a structure-activity relationship. Overall, 11 compounds displayed better activity than chloramphenicol against Gram-positive and Gram-negative bacteria. Monoalkylated amines 2a-h displayed an activity similar to that of ethambutol against Mycobacterium tuberculosis.
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Affiliation(s)
- Celso O Rezende
- Departamento de Química, Universidade Federal de Juiz de Fora, 36036-330, Juiz de Fora, MG, Brazil
| | - Larissa A Oliveira
- Departamento de Química, Universidade Federal de Juiz de Fora, 36036-330, Juiz de Fora, MG, Brazil
| | - Bruno A Oliveira
- Departamento de Química, Universidade Federal de Juiz de Fora, 36036-330, Juiz de Fora, MG, Brazil
| | - Camila G Almeida
- Departamento de Química, Universidade Federal de Juiz de Fora, 36036-330, Juiz de Fora, MG, Brazil
| | - Bianca S Ferreira
- Departamento de Química, Universidade Federal de Juiz de Fora, 36036-330, Juiz de Fora, MG, Brazil
| | - Mireille Le Hyaric
- Departamento de Química, Universidade Federal de Juiz de Fora, 36036-330, Juiz de Fora, MG, Brazil
| | - Guilherme S L Carvalho
- Instituto Nacional de Infectologia Evandro Chagas-Fiocruz, 21040-360, Rio de Janeiro, RJ, Brazil
| | | | - Michel Batista
- Instituto Carlos Chagas-Fiocruz, 81350-010, Curitiba, PR, Brazil
| | | | - Vânia L Silva
- Departamento de Parasitologia, Microbiologia e Imunologia, Universidade Federal de Juiz de Fora, 36036-330, Juiz de Fora, MG, Brazil
| | - Claudio G Diniz
- Departamento de Parasitologia, Microbiologia e Imunologia, Universidade Federal de Juiz de Fora, 36036-330, Juiz de Fora, MG, Brazil
| | - Mauro V Almeida
- Departamento de Química, Universidade Federal de Juiz de Fora, 36036-330, Juiz de Fora, MG, Brazil
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