Biocatalytic Preparation of Chloroindanol Derivatives. Antifungal Activity and Detoxification by the Phytopathogenic Fungus <i>Botrytis cinerea</i>
2020
Cristina Pinedo-Rivilla | Javier Moraga | Guillermo Pérez-Sasián | Alba Peña-Hernández | Isidro G. Collado | Josefina Aleu
Indanols are a family of chemical compounds that have been widely studied due to their broad range of biological activity. They are also important intermediates used as synthetic precursors to other products with important applications in pharmacology. Enantiomerically pure chloroindanol derivatives exhibiting antifungal activity against the phytopathogenic fungus <i>Botrytis cinerea</i> were prepared using biocatalytic methods. As a result of the biotransformation of racemic 6-chloroindanol (<b>1</b>) and 5-chloroindanol (<b>2</b>) by the fungus <i>B. cinerea</i>, the compounds <i>anti</i>-(+)-6-chloroindan-1,2-diol (<i>anti</i>-(+)-<b>7</b>), <i>anti</i>-(+)-5-chloroindan-1,3-diol (<i>anti</i>-(+)-<b>8</b>), <i>syn</i>-(+)-5-chloroindan-1,3-diol (<i>syn</i>-(+)-<b>8</b>), <i>syn</i>-(-)-5-chloroindan-1,3-diol (<i>syn</i>-(-)-<b>8</b>), and <i>anti</i>-(+)-5-chloroindan-1,2-diol (<i>anti</i>-(+)-<b>9</b>) were isolated for the first time. These products were characterized by spectroscopic techniques and their enantiomeric excesses studied by chromatographic techniques. The results obtained in the biotransformation seem to suggest that the fungus <i>B. cinerea</i> uses oxidation reactions as a detoxification mechanism.
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