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Title: Halogenated benzoate derivatives of altholactone with improved anti-fungal activity
Authors: Jirayut Euanorasetr
Mayura Junhom
Srisurang Tantimavanich
Onanong Vorasin
Bamroong Munyoo
Patoomratana Tuchinda
Watanalai Panbangred
Mahidol University
Keywords: Biochemistry, Genetics and Molecular Biology;Chemistry
Issue Date: 1-Jan-2016
Citation: Journal of Asian Natural Products Research. Vol.18, No.5 (2016), 462-474
Abstract: © 2016 Informa UK Limited, trading as Taylor & Francis Group. Abstract: Altholactone exhibited the anti-fungal activity with a high MIC value of 128 μg ml−1against Cryptococcus neoformans and Saccharomyces cerevisiae. Fifteen ester derivatives of altholactone 1–15 were modified by esterification and their structures were confirmed by spectroscopic methods. Most of the ester derivatives exhibited stronger anti-fungal activities than that of the precursor altholactone. 3-Bromo- and 2,4-dichlorobenzoates (7 and 15) exhibited the lowest minimal inhibitory concentration (MIC) values against C. neoformans at 16 μg ml−1,while the 4-bromo-, 4-iodo-, and 1-bromo-3-chlorobenzoates (11–13) displayed potent activity against S. cerevisiae with MIC values of 1 μg ml−1. In conclusion, this analysis indicates that the anti-fungal activity of altholactone is enhanced by addition of halogenated benzoyl group to the 3-OH group.
ISSN: 14772213
Appears in Collections:Scopus 2016-2017

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