Structure of (+)-orthosporin, a phytotoxic metabolite isolated from Rhynchosporium orthosporum has been elucidated from spectroscopic data and chemical reaction, and the stereochemistry of (+)-orthosporin and (+)-diaporthin has been confirmed by the synthesis.
Structure of Alboatrin, a novel phytotoxin isolated from Verticillium albo-atrum has been elucidated on the spectroscopic data and has been confirmed by the synthesis. A biogenesis for the unique phytotoxin is suggested.
Anti‐B lectins were extracted from the dried and aged seed cover (aril) of an Evonymus variety. After 20 months of aging these lectins resembled the best hitherto described. They were specifically inhibited by B substance of human and horse origin.
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