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  • Title: Structure and absolute configuration of the fungal ansabenzoquinone rhizopogone.
    Author: Lang M, Jägers E, Polborn K, Steglich W.
    Journal: J Nat Prod; 2009 Feb 27; 72(2):214-7. PubMed ID: 19175325.
    Abstract:
    The main pigment of the basidiomycete Rhizopogon pumilionus is the [13]paracyclophane derivative rhizopogone (1). The structures of 1 and the accompanying 2-acetoxyrhizopogone (5) were determined by spectroscopic studies, including 1D and 2D NMR measurements. The absolute configuration of 1 was assigned by comparison of its CD spectrum with that of secotridentoquinone (4). The structures of 1 and tridentoquinone (3) suggest a common biosynthesis originating from 2-geranylgeranyl-6-hydroxy-1,4-benzoquinone (9). This supports the close taxonomic relationship of the genera Rhizopogon and Suillus (Boletales).
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