The isolation of cytochalasin E and cytochalasin K from Aspergillus clavatus is described. The structure of cytochalasin K, a new metabolite, has been determined by spectroscopic data and chemical reactions. The relationship between cytochalasin E and cytochalasin K was confirmed by chemical conversion. Chemical reactions on cytochalasins E and K, both of which contain the unique vinyl carbonate moiety, are described.
P. S. Steyn, F. R. van Heerden and C. J. Rabie, J. Chem. Soc., Perkin Trans. 1, 1982, 541 DOI: 10.1039/P19820000541
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