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Synthesis, antimicrobial evaluation, and structure-activity relationship of α-pinene derivatives.
Dhar, Preeti; Chan, PuiYee; Cohen, Daniel T; Khawam, Fadi; Gibbons, Sarah; Snyder-Leiby, Teresa; Dickstein, Ellen; Rai, Prashant Kumar; Watal, Geeta.
Afiliação
  • Dhar P; Department of Chemistry and ‡Department of Biology, State University of New York , 1 Hawk Drive, New Paltz 12561, United States.
J Agric Food Chem ; 62(16): 3548-52, 2014 Apr 23.
Article em En | MEDLINE | ID: mdl-24716724
Several (+)- and (-)-α-pinene derivatives were synthesized and evaluated for their antimicrobial activity toward Gram-positive bacteria Micrococcus luteus and Staphylococcus aureus, Gram-negative bacterium Escherichia coli, and the unicellular fungus Candida albicans using bioautographic assays. (+)-α-Pinene 1a showed modest activity against the test organisms, whereas (-)-α-pinene 1b showed no activity at the tested concentration. Of all the α-pinene derivatives evaluated, the ß-lactam derivatives (10a and 10b) were the most antimicrobial. The increase in the antimicrobial activity of 10a compared to 1a ranged from nearly 3.5-fold (C. albicans) to 43-fold (S. aureus). The mean ± standard deviation for the zone of inhibition (mm) for 10a (C. albicans) was 31.9 ± 4.3 and that for S. aureus was 51.1 ± 2.9. Although (-)-α-pinene 1b was not active toward the test microorganisms, the corresponding ß-lactam 10b, amino ester 13b, and amino alcohol 14b showed antimicrobial activity toward the test microorganisms. The increase in the antimicrobial activity of 10b compared to 1b ranged from 32-fold (S. aureus) to 73-fold (M. luteus). The mean ± standard deviation for the zone of inhibition (mm) for 10b (S. aureus) was 32.0 ± 0.60 and that for M. luteus was 73.2 ± 0.30.
Assuntos

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Monoterpenos / Anti-Infecciosos Idioma: En Ano de publicação: 2014 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Monoterpenos / Anti-Infecciosos Idioma: En Ano de publicação: 2014 Tipo de documento: Article