AI Article Synopsis
- Six compounds related to oryzalide were isolated from the extract of a rice plant known for its resistance to bacterial leaf blight, specifically using the "Norin-27" cultivar.
- Their structures were identified as kaurane analogues, which include both standard forms and those attached to fatty acids.
- The compounds include various forms of ent-15,16-epoxy-kauran derivatives, highlighting the diversity in structure, such as enol forms and different fatty acid attachments.
Article Abstract
Six structurally oryzalide-related compounds, oryzadione (1), 2, 3, 4, 5 and 6, were isolated from a neutral fraction of the extract of healthy leaves using a bacterial leaf blight-resistant cultivar of a rice plant, "Norin-27", as a group of antimicrobial substances. Their structures were determined by spectroscopic studies to be kaurane analogues and kaurane analogues conjugated with fatty acids, i.e., 1: ent-15,16-epoxy-kauran-2,3-dione (enol form: ent-15,16-epoxy-2-hydroxy-kauran-1-en-3-one), 2: ent-15,16-epoxy-3beta-hydroxy-kauran-2-one, 3: ent-15,16-epoxy-3-oxa-kauran-2-one, 4: ent-15,16-epoxy-3beta-myristoyloxy-kauran-2-one, 5: ent-15,16-epoxy-3alpha-palmitoyloxy-kauran-2-one, and 6: ent-15,16-epoxy-2beta-palmitoyloxy-kauran-2-one.
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| http://dx.doi.org/10.1016/j.phytochem.2004.03.016 | DOI Listing |
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