Abstract
IN the course of extensive studies on the metabolic products formed by the higher fungi, mainly of the class Basidiomycetes, grown on synthetic media, we examined a sample of decayed Eucalyptus regnans wood discovered at the Australian Newsprint Mills, Boyer, Tasmania, in 1944. From this mass of rotted wood encompassed with mycelial hyphæ, the acetyl derivative of a monobasic acid has been isolated. On hydrolysis this acetate (m.p. 256–257° ; [α]20D + 35.8° (c, 3.1 in pyridine); found: C, 75.9; H, 10.1 per cent; molec. wt. (Rast), 455; C29H46O4 requires C, 76.0; H, 10.1 per cent; molec. wt. 458) gave rise to the parent acid (m.p. 293°, [α]17D + 35.6° (c, 1.4 in pyridine); found: C, 77.9; H, 10.5; C27H44O3 requires C, 77.9; H, 10.6 per cent), which appears to be a C27- and not the more usual C30- type of the triterpene group, examples of which are known to occur in naturally grown Polyporos betulinus Fr.1.
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References
Cross, Eliot, Heilbron and Jones, J. Chem. Soc., 632 (1940).
Kariyone, and Kurono, J. Pharm. Soc. Japan, 60, 110, 318 (1940).
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GASCOIGNE, R., HOLKER, J., RALPH, B. et al. Occurrence of Eburicoic Acid. Nature 166, 652 (1950). https://doi.org/10.1038/166652a0
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DOI: https://doi.org/10.1038/166652a0
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