Characterization of the hexahydropolyprenols of Aspergillus fumigatus Fresenius

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Abstract
The isolation and properties of a group of alcohols from the mycelium of Aspergillus fumigatus Fresenius are described. Mass-, nuclear-magnetic-resonance- and infrared-spectrometric studies coupled with evidence from ozonolytlc degradation and chromatography show the mixture to contain hexa-hydroprenols-18, -19, -20, -21, -22, -23 and -24. Each contains a saturated "hydroxy-terminal" isoprene residue, a saturated [omega]-terminal isoprene residue and a saturated [psi] -isoprene residue (adjacent to the [omega] -residue). The presence of only two trans-isoprene residues is also a feature of the series of alcohols, but the precise position of these in each molecule is not known.