The structures of cytochalasins A and B, metabolites of Helminthosporium dematioideum showing novel effects on mammalian cells, have been determined. Cytochalasin B is identical with phomin. (–)-α-Methyladipic acid is shown to have the R-configuration contrary to a previous assignment; the absolute configurations of the Nupheus alkaloids therefore require revision.
D. C. Aldridge, J. J. Armstrong, R. N. Speake and W. B. Turner, J. Chem. Soc. C, 1967, 1667 DOI: 10.1039/J39670001667
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