期刊
MOLECULES
卷 13, 期 10, 页码 2385-2393出版社
MOLECULAR DIVERSITY PRESERVATION INT
DOI: 10.3390/molecules13102385
关键词
3H-spiro[1-benzofuran-2,1 '-cyclohexane] derivatives; Heliotropium filifolium; antibacterial properties
资金
- FONDECYT [1060033]
- DICYT
A re-examination of cuticular components of Heliotropium filifolium allowed the isolation of four new compounds: 3'-hydroxy-2',2',6'-trimethyl-3H-spiro[1-benzofuran-2,1'- cyclohexane]-5-carboxylic acid (2), methyl 3'-acetyloxy-2', 2', 6'-trimethyl-3H-spiro[1-benzofuran-2,1'-cyclohexane]-5-carboxylate (3), methyl 3'-isopentanoyloxy2', 2', 6'-trimethyl-3H-spiro[1-benzofuran-2,1'-cyclohexane]-5-carboxylate (4) and methyl 3'-benzoyloxy-2', 2', 6'-trimethyl-3H-spiro[1-benzofuran-2,1'-cyclohexane]-5-carboxylate (5). Compounds 2-5 were identified by their spectroscopic analogies with filifolinol (1), and their structures confirmed by chemical correlation with 1. The antimicrobial properties of the compounds were tested against Gram positive and Gram negative bacteria. Some of them proved to be active against Gram positive, but inactive against Gram negative bacteria. In searching for structure-activity relationships from the obtained MIC values, lipophilicity was shown to be an important variable.
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