The phytoalexins from cauliflower, caulilexins A, B and C: isolation, structure determination, syntheses and antifungal activity |
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| Authors: | Pedras M Soledade C Sarwar Mohammed G Suchy Mojmir Adio Adewale M |
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| Institution: | Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK, Canada S7N 5C9. soledade.pedras@usask.ca |
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| Abstract: | Our continuous search for phytoalexins from crucifers led us to examine phytoalexin production in florets of cauliflower (Brassica oleracea var. botrytis) under abiotic (UV light) elicitation. Four known (isalexin, S-(-)-spirobrassinin, 1-methoxybrassitin, brassicanal C) and three new (caulilexins A-C) phytoalexins were isolated. The syntheses and antifungal activity of caulilexins A-C against the economically important pathogenic fungi Leptosphaeria maculans, Rhizoctonia solani and Sclerotinia sclerotiorum, and the first synthesis of brassicanal C are reported. |
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| Keywords: | Brassica oleracea Cruciferae Brassicanal C synthesis Brassitin Cauliflower Crucifer Leptosphaeria maculans 1-Methoxyindolyl-3-acetonitrile Phoma lingam Phytoalexin Spirobrassinin |
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