Two new zinniol-related phytotoxins from Alternaria solani |
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Authors: | Moreno-Escobar Jorge Puc-Carrillo Alejandra Cáceres-Farfán Mirbella Peña-Rodríguez Luis M Gamboa-Angulo M Marcela |
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Institution: | Grupo de Química Orgánica, Unidad de Biotecnología, Centro de Investigación Científica de Yucatán, A.C., Calle 43 No. 130, col. Chuburná, Mérida, Yucatán, Mexico. |
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Abstract: | Bioassay-guided purification of the organic crude extract of Alternaria solani resulted in the isolation of three metabolites responsible for causing necrosis on potato leaves. These phytotoxins were identified as 2-(2",3"-dimethyl-but-1-enyl)-zinniol (1), 8-zinniol methyl ether (2). and 8-zinniol methyl ether based on their spectroscopic data (IR, MS, 1H and 13CNMR). Metabolites 1 and 2 have been identified as new phytotoxins structurally related to zinniol (4). Additionally, 5-(3',3'-dimethylallyloxy)-7-methoxy-6-methyl-phthalide and 8-zinniol-2-(phenyl)-ethyl ether (3) were also isolated during the purification process. |
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