Identification of (+)-Phyllocladene, (-)-Sandaracopimaradiene, and (+)-Kaurene as New Fungal Metabolites from Fusicoccin-producing Phomopsis amygdali F6

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  • KENMOKU Hiromichi
    Course of the Science of Bioresources, The United Graduate School of Agricultural Sciences, Iwate University (Yamagata University)
  • TANAKA Mio
    Department of Bioresource Engineering, Faculty of Agriculture, Yamagata University
  • OGIYAMA Koichi
    Department of Bioenvironment, Faculty of Agriculture, Yamagata University
  • KATO Nobuo
    Institute of Scientific and Industrial Research, Osaka University
  • SASSA Takeshi
    Course of the Science of Bioresources, The United Graduate School of Agricultural Sciences, Iwate University (Yamagata University) Department of Bioresource Engineering, Faculty of Agriculture, Yamagata University

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  • Identification of (+)-Phyllocladene, (−)-Sandaracopimaradiene, and (+)-Kaurene as New Fungal Metabolites from Fusicoccin-producing<i>Phomopsis amygdali</i>F6

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Abstract

A chemical analysis of the diterpene hydrocarbons produced by fusicoccin-producing fungus Phomopsis amygdali F6 identified five phyllocladene-related tri- and tetracyclic diterpene hydrocarbons. The presence of (+)-phyllocladene, (−)-sandaracopimaradiene, (+)-isopimara-8,15-diene, and (+)-pimara-8(14),15-diene in the fungus was demonstrated by GC-MS, 1H-NMR, and [α]D measurements. (+)-Kaurene was also identified by GC-MS and chiral capillary GC. The possible biosynthetic relationship of these metabolites is discussed.

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