Odyssic acid

Chemistry of the Higher Fungi. Part VII. Odyssic Acid and... 

Mycomycin, which was isolated by Celmer and Solomons from the culture fluid of the actinomycete, Nocardia acidophilus, was shown to contain a polyacetylenic structure and also an optically active allene unit (XLII). Van t Hoff had predicted that the aUene unit should show optical activity, but mycomycin provided the first example of its existence in nature. Nemotin (XLIII) and nemotinic acid (XLIV), which are formed by Poria corticola and Poria tenuis, are also allenes. A related compound, odyssic acid (XLV), is produced by the same fungi. 

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