Synthesis and Biological Evaluation of New Analogues of the Active Fungal Metabolites N-(2-Methyl-3-oxodecanoyl)-2-pyrroline and N-(2-Methyl-3-oxodec-8-enoyl)-2-pyrroline (II)
New analogues of the bioactive enamides isolated from P. brevicompactum (2 and 3) have been synthesized to improve the biological activities. Two different structural modifications have been introduced: substitution of the aliphatic side chain present in the natural products (1 − 4) by other groups...
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Published in | Journal of agricultural and food chemistry Vol. 48; no. 8; pp. 3682 - 3688 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
WASHINGTON
American Chemical Society
01.08.2000
Amer Chemical Soc |
Subjects | |
Online Access | Get full text |
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Summary: | New analogues of the bioactive enamides isolated from P. brevicompactum (2 and 3) have been synthesized to improve the biological activities. Two different structural modifications have been introduced: substitution of the aliphatic side chain present in the natural products (1 − 4) by other groups frequently found in other active compounds and use of other nitrogen-containing five-membered rings with different degrees of oxidation. In this way, the insecticidal and fungicidal activities have been improved. Thus, compound 9, which posseses a 3-pyrroline ring, exhibited important insecticidal activity against third-instar nymphs of Oncopeltus fasciatus Dallas (100% mortality at 7.5 μg/cm2). Remarkable fungicidal activity was also found, and preliminary structure−activity relationships could be established. Keywords: Penicillium brevicompactum; fungal metabolites; β-ketoamide; analogues; insecticide; fungicide |
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Bibliography: | ark:/67375/TPS-0T9W6FQ6-B istex:1A23BC91B0A712A2A234A887A6FE30AD154BA176 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0021-8561 1520-5118 |
DOI: | 10.1021/jf990948g |