Please use this identifier to cite or link to this item: http://localhost:8080/xmlui/handle/20.500.12421/4522
Title: A new synthetic methodology for pyridinic sucrose esters and their antibacterial effects against Gram-positive and Gram-negative strains
Authors: Mora Vargas, Jorge Andrés
Orduña Ortega, Julieth
Correia Dos Santos, Maitê Bernardo
Metzker, Gustavo
Gomes, Eleni De Barros
Boscolo, Maurício
Keywords: Acoustic cavitation
Antibacterial activity
Homogeneous catalysis
Pyridinic methyl esters
Ucrose esters
Issue Date: 19-Feb-2020
Publisher: Elsevier Ltd
Abstract: Described are the development of a new synthetic method using ultrasonic irradiation and sodium methoxide as catalyst for a series of pyridinic sucrose esters (py-SEs), derived from transesterification of sucrose with picolinic, nicotinic and isonicotinic methyl esters. The reaction was optimized using a 32 x 2 experimental design, the reaction time, temperature and sucrose: methyl ester molar ratio being evaluated. The method proved to be efficient for obtaining monosubstituted esters (≥83%) with high methyl ester consumption (≥79%). The monosubstituted py-SEs were isolated by semipreparative HPLC, characterized by high-resolution mass spectrometry, calorimetry, vibrational spectroscopy, and 1H and 13C NMR. The py-SEs were tested against E. coli, S. aureos, and P. aeruginosa bacteria with minimum inhibitory concentration values equal or inferior to the reference drugs for both E. coli and P. aeruginosa.
URI: http://repository.usc.edu.co/handle/20.500.12421/4522
ISSN: 0008-6215
Appears in Collections:Artículos Científicos

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